Some standard content:
ICS73.120
D94
JB
Machinery Industry Standard of the People's Republic of China
JB/T6126—2002
replaces JB/T6126—1992||tt ||MLS, MLN type vertical cement mill
MLS, MLN vertical roller millforcement2002-07-16 release
2002-12-01 implementation
Foreword released by the National Economic and Trade Commission of the People's Republic of China,
1
3
4
Scope
Normative reference documents
Types and basic parameters
Technical requirements| |tt||4.1
4.2
4.3
Basic requirements.
Complete machine performance requirements.
Main component requirements
4.4
Assembly and installation requirements
4.5
Commissioning requirements,
4.6 Painting and anti-rust requirements
Test methods,
5| |tt||6
Inspection rules.
Marking, packaging, transportation and storage
Item
Times
JB/T6126—2002||tt ||JB/T6126—2002
Foreword
This standard replaces JB/T6126-1992MLS and MLN vertical cement mill》. Compared with JB/T6126-1992, the main changes in this standard are as follows: product model specifications are added to the basic parameter table: assembly and installation requirements are added to the technical requirements. This standard is proposed by China Machinery Industry Federation. This standard is under the jurisdiction of the National Mining Machinery Standardization Technical Committee (SAC/TC88). This standard is drafted by Shenyang Heavy Machinery Group Co., Ltd. The main drafter of this standard: Sungrui.
1 Scope
MLS, MLN type vertical cement mill
JB/T6126—2002
This standard specifies the specifications of MLS, MLN type vertical cement mill Type and basic parameters, technical requirements, test methods, inspection rules and signs, packaging, transportation and storage,
This standard is applicable to vertical cement for grinding cement raw meal, cement clinker, medium hardness limestone, and gypsum Mill (hereinafter referred to as vertical mill),
2 Normative reference documents
The clauses in the following documents become the clauses of this standard through reference in this standard. For referenced documents with a reference period, all subsequent amendments (excluding corrigenda) or revisions do not apply to this standard. However, parties that reach an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. . For undated referenced documents, the latest edition applies to this standard. GB/T699-1999 High-quality carbon structural steel
GB/T7001988 Carbon structural steel (negDIN630:1987) GB/T1184-1996 Shape and position tolerance without tolerance value GB/T13451991 Cement fineness inspection method ( 80um sieve analysis method) GB/T1348-1988 Ductile iron castings
GB/T 1801-1999
GB/T1804-2000
GB/T 37662001
GB /T 3768-1996
(eqv ISO 3746:1995)
Limits and fit tolerance zones and selection of fits (eqvISO1829:1975) General tolerances End note tolerances Tolerances of linear and angular dimensions (eqvISO2768 -1:1989) General Technical Conditions for Hydraulic Systems (eqvISO4413:1998) Acoustic Sound Pressure Method for Determination of Sound Power Level of Dole Sound Sources Above the Reflecting Surface Using Envelope Measurement Surface Simple Method GB/T 40641983
3 Electrical Equipment Safety Design Guidelines
GB/T 7233-1987
GB/T79321987
GB/T 79351987
GB/T9239—1988
GB/T 11345 -1989
Ultrasonic flaw detection and quality rating method for steel castings (negBS6208:1982) General technical conditions for pneumatic systems (negISO4414:1982) General technical conditions for hydraulic components (negNFPAT310.3) Rigid rotor balance quality allows unbalanced Determination of (eqvISO1940-1:1986) manual ultrasonic flaw detection method and flaw detection result classification of steel welds GB/T13306-1991 label
JB/T 5000.31998
General technical conditions for welded parts of heavy machinery||tt| |JB/T5000.6—1998 General Technical Conditions for Heavy Machinery Steel Castings JB/T5000.81998 General Technical Conditions for Heavy Machinery Forgings JB/T 5000.12—1998
General Technical Conditions for Heavy Machinery Coating
General technical conditions for heavy machinery packaging
JB/T 5000.131998
JB/T7929—1999
Gear transmission cleanliness
JC/T401.1—1991 (1996)
Technical conditions for commercial manganese steel castings for building materials machinery JB/T6126—2002
3 Types and basic parameters
3.1 Vertical mill types are divided into two types: raw mill and clinker mill. The structure is shown in Figure 1. Height divider
feed port
e8
reducer,
Figure
3.2 The basic parameters of the vertical mill should comply with Table 1 Specification table
Model
MLS—1411
MLS—2215
MLS—2417
MLS—2619
MLS—3123| |tt||MLS—3424
MLS-3626
MLS-4531
2
grinding disc diameter
mm
1400|| tt||2250
2450
2650
3150
3450
3600
4500
grinding diameter|| tt||mm
1185
1570
1750
1900
2300
2430
2650||tt| |3150
Feeding particle size
mm
35
65
80
80
80||tt| |90
90
1to
Production
Quantity
h
18.0
52.5
75.0
90.0
150.0
180.0
235.0
400.0
Main motor
Power kw
225
500
630
710
1120
1300
1950
3400
Discharge port
Bypass
Magic
Air inlet
Milling disc speed
r/min
37.96
31.00||tt ||29.50
28.10
25.00
24.50
25.20
21.60
reference weight
49
[14
132
167
246
310
380
787
Model
MLN—1613
MLN—2417
MLN—2619
MLN—3424
Grinding disc diameter
mm
1600
2450
2650
3450
Grinding diameter
mm||tt| |1300
1850
1900
2430
Table
1(continued)
Feeding particle size
mm| |tt||40
40
40
40
Note 1: The main motor power and output are based on the following conditions. Output
Uh|| tt||10.0
32.0
45.5
94.0
main motor
power kw
300
870|| tt||970
1800
JB/T6126—2002
Dense disc speed
r/min
35.00
29.20|| tt | t: b) The moisture content of the raw material grinding material is not more than 12%, and the clinker grinding material is not more than 4%; c) The fineness of the grinding product is not more than 12% R0.08mm: d) The residual moisture of the raw material grinding product is not more than 1%: e) Clinker density cement quality: The cement particle gradation should meet the minimum pressure of 41.7MPa after 28 days. Note 2: The reference weight does not include the weight of the main motor. 3.3 Model representation:
M
3.4 Marking example:
S
xx
××
Grinding diameter, unit is dm
grinding disc diameter, unit is dm
raw mill (clinker mill is N)
vertical
mill
grinding disc diameter is 2450mm , a raw material vertical cement mill with a grinding diameter of 1750mm: MLS-2417 vertical cement mill
a clinker vertical cement mill with a grinding disc diameter of 2650mm and a grinding diameter of 1900mm: MLN-2619 Vertical cement machine
4 Technical requirements
4.1 Basic requirements
4.1.1 The vertical mill should comply with the provisions of this standard and be manufactured and installed in accordance with the approved drawings and technical documents according to the prescribed procedures. and use. Reference weight
65
170
203
410
4.1.2 Raw materials, purchased parts and processing, assembly and installation not specified in this standard and other technical requirements, shall comply with national standards and general standards of relevant industries.
4.1.3 Unnoted tolerances for linear dimensions on the drawing: a)
b)
The parts should comply with the relevant provisions of 7.3 of JB/T5000.3--1998. The welded parts should comply with the relevant provisions of JB/T5000.3--1998. 4.1.4
4.1.5
4.1.6
4.1.7
4.1.8
4.2
Forgings should comply with JB /T5000.8-1998, ductile iron castings should comply with the relevant provisions of GB/T1348--1988. Shape and position tolerances not noted shall comply with the relevant provisions of GB/T1184-1996. High manganese steel castings should comply with the relevant provisions of JC/T401.1-1991. The complete machine performance requirements
4.2.1
The main technical parameters of the whole machine should be in line with the requirements of the system process. 3
JB/T6126—2002
4.2.2 Set up necessary sealing devices to ensure that no dust enters the bearings of the equipment. Each lubrication, hydraulic and pneumatic system should be well sealed and without leakage. 4.2.3
4.2.4
The service life of the vertical mill before the first overhaul should not be less than 20000h. 4.2.5
4.2.6
4.2.7
4.2.8
Grinding and millboards are within the specified service period (see Table 2). The amount of wear shall not exceed 35% of the weight of the village board itself. The noise sound pressure level of the vertical mill during load operation should not exceed 90dB (A). Each seal of the shell should be well sealed and dust should not leak. Vertical mills should be equipped with monitoring interlock protection devices. 4.2.9 The rotating part of the vertical mill drive shaft should be equipped with a protective cover. The design of electrical equipment should comply with the relevant regulations of GB/T4064-1983, 4.2.10
4.2.11
The wearing parts of vertical mills of the same model and specifications should be interchangeable and easy to replace. 4.3 Main component requirements
Grinding plates, grinding discs, and air ring lining plates
4.3.1
The performance requirements of grinding plates, grinding plates, and air ring lining plates should not be lower than those in Table 2 Provisions. Table 2
Part name
Grinding lining plate
Mushroom plate
Air ring plate or air ring (whole)
Hardness HRC| |tt||62±2
62±2
Note: The service life value is calculated based on the grinding rotary parasitic material. 4.3.2 Milling disc seat
4.3.2.1
The flatness of the court surface
shall not be lower than Level 8 in GB/T11841996
The cast steel material shall not be lower than JB/ Relevant provisions of ZG270-500 in T5000.61998. 4.3.2.2 Ultrasonic flaw detection should not be lower than level 2 in GB/T7233-1987. 4.3.3 Grinding
4.3.3.1 The material should not be lower than the relevant provisions of 45 steel in GB/T699-1999, and corresponding heat treatment should be carried out. The service life
7000
7000
≥7000
4.3.3.2 The reference dimensional tolerance level of the shaft should not be lower than the f6 level in GB/T1801-1999, and the surface roughness should not be lower than R, 3.2μm4.3.4 Separator The material of the transmission shaft
should not be lower than the relevant provisions of 45 steel in GB/T699~-1999, and should be heat treated accordingly. 4.3.5 Series
4.3.5.1
4.3.5.2
The quality of the welded seam of the welded batch should not be lower than Level B in GB/T11345-1989. The quality of the casting collection should not be lower than level 1 in GB/T7233-1987. 4.3.6 Shell
4.3.6.1
4.3.6.2
The welding quality of the shell should not be lower than level III·B in GB/T11345-1989. The steel plate material should not be lower than the requirements for Q235-A in GB/T7001988 4.3.7 reducer
4.3.7.1
The cleanliness of the main reducer oil is P in JB/T7929-1999 class. The noise sound pressure level of the main reducer during no-load operation should not exceed 80dB (A). 4.3.7.2
4.3.7.3
4.3.7.4
The flatness tolerance level of the bottom surface of the reducer chassis should not be lower than level 8 in GB/T1184-1996. The normal service life of the reducer should not be less than 10 years. 4.3.7.5 The calculated life of the reducer bearings should not be less than 100000h. 4.3.8 Hydraulic lubrication and pneumatic system
hydraulic components should comply with the relevant regulations of GB/T7935-1987. 4.3.8.1
4.3.8.2
4
The hydraulic system shall comply with the relevant provisions of GB/T3766-2001. 4.3.8.3 The pneumatic system shall comply with the relevant provisions of GB/T7932-1987. 4.4 Assembly and installation requirements
4.4.1 The contact between the grinding plate village plate and the grinding plate seat should be greater than 75%. 4.4.2 The vertical tolerance value of the main vertical axis in the separator shell is 0.1mm/m. 4.4.3. The center line of the grinding shaft should intersect with the center line of the reducer, and the deviation is ±5mm. When installing the vertical mill, the center line formed by all grinding operations and the center line of the reducer should coincide with a deviation of ±5mm. 4.4.4
4.4.5 The center line of the lower shell and the center line of the reducer should coincide with each other, and the deviation should not be greater than 5 mm. 4.4.6 The coaxiality tolerance value of the main motor output shaft and the reducer input shaft should not be greater than 5 mm. @0.1mm. 4.4.7
The grinding inner cavity bearing seal should be pressure tested, and the test pressure is 0.05MPa. JB/T6126—2002
4.4.8 Hydraulic systems such as hydraulic cylinders and accumulators should undergo a pressure test. The test pressure is 1.25 times the working pressure. The pressure drop shall not exceed 10% of the test pressure for 120 minutes.
4.4.9 The rotating part of the separator shall be statically balanced and inspected. The balance quality level shall comply with the G16 level in GBT9239-1988. 0The level tolerance of the main motor base is 0.1mm/m. 4.4.10
4.4.11 The deviation between the vertical and horizontal center lines of the upper plane of the reducer base and the center line of the foundation frame shall not be greater than 5 mm. 4.5 Test run requirements
4.5.1 No-load test run requirements
4.5.1.1 A comprehensive inspection should be carried out before no-load test run, and there should be no debris inside the vertical mill body. The grinding should be flexible as the bracket moves and rises and falls. 4.5.1.2
4.5.1.3
The speed of the separator should be adjusted smoothly within the specified range. The hydraulic flipping device should operate flexibly within the specified range and operate no less than three times respectively. 4.5.1.4
Check whether the bearing sealing device is effective.
4.5.1.5
4.5.1.6
4.5.1.7
The noise sound pressure level during no-load test operation should not exceed 85dB (A). The temperature rise of each rolling bearing of the vertical mill should not exceed 30°C. The no-load trial operation of the vertical mill is carried out on site, and the operation time should not be less than 12 hours. 4.5.1.8
4.5.2 Load trial operation requirements
4.5.2.1 Load trial operation shall be carried out after passing the no-load trial operation. 4.5.2.2 The vertical mill load test operation is carried out on site, and the operation time should not be less than 12 hours. 4.5.2.3 The working temperature of grinding rolling bearings should not exceed 120°C, and the working temperature of other rolling bearings should not exceed 90°C. 4.5.2.4 The oil supply temperature of the reducer lubricating oil should not exceed 50℃: the working temperature of the moving bearing of the reducer should not exceed 70℃, and the working temperature of the rolling bearing should not exceed 70℃.
4.5.2.5 Each hydraulic, lubrication and pneumatic system should operate normally. 4.5.2.6 The vibration speed at the input bearing seat of the reducer shall not be greater than 5mm/s during load operation. 4.6 Painting and anti-rust requirements
The painting and anti-rust of vertical mills shall comply with the provisions of JB/T5000.12--1998. 5 Test method
5.1 Turning test checks the rotational flexibility of each rotating part. The turning test shall not be less than 3 turns and there shall be no jamming phenomenon. 5.2 The vertical mill main reducer shall be tested with no load in the manufacturer. The running time shall not be less than 2 hours. The cleanliness and noise shall be checked separately and shall comply with the provisions of 4.3.7.1 and 4.3.7.2.
5.3 No-load test run, an appropriate thickness of material layer can be added to maintain the specified gap between the grinder and the grinding disc. 5.4 Hardness test:
5.4.1 Instruments
Hardness tester, portable Grinding machine, metallographic sandpaper. 5
JB/T6126—2002
5.4.2 Method
Use the grinding wheel and metallographic sandpaper to grind evenly on both sides of the non-working surface of the grinding plate and the grinding disc lining plate. Take out four test surfaces with an area of ??500mm2 and a surface temperature of R1.6um. Aim the hardness meter vertically at the test surface for testing. The test values ??will be automatically recorded. Each test surface will measure three points. The arithmetic mean of each measurement value will be calculated. Should comply with the relevant provisions in Table 2 of 4.3.1. 5.5 No-load test run inspection:
5.5.1 Use a rotational speed measuring instrument to detect the rotational speed of the separator, and it shall comply with the provisions of 4.5.1.3. 5.5.2 Use a pressure gauge to check the grinding bearing seal, and it should comply with the requirements of 4.4.7. 5.5.3 Use a sound level meter to detect the sound of vertical grinding. The detection should be carried out at a distance of 1m from the vertical grinding wheel seat and a height of 1.5m. The detection method shall be carried out in accordance with the relevant provisions of GB/T3768-1996, and shall comply with the provisions of 4.5.1.6. 5.5.4 Use a laser measuring instrument to detect the installation quality of the grinding and housing, and shall comply with the provisions of 4.4.3~4.4.5. 5.6 Load test run on-site inspection:
5.6.1 The output test is based on the normal operation value of the on-site equipment. 5.6.2 Use a temperature measuring instrument to detect the reducer oil temperature, and it shall comply with the provisions of 4.5.2.4. 5.6.3 The grinding fineness test shall be carried out according to the method specified in GB/T13451991. 5.6.4 Use a thermometer to detect the bearing temperature at the bearing seat, and shall comply with the provisions of 4.5.2.3. 5.6.5, power test, the voltage value U and current value displayed by the main motor voltmeter and ammeter in the control cabinet are used to calculate the power P according to the following formula:
P=3Ulcos
where: | |tt||P---power, unit is W:
U—voltage, unit is V:
—current, unit is A;
cos-power factor.
5.6.6 Grinding disc speed and separation speed test. 5.6.7 Use a vibration test instrument to detect the vibration speed at the input shaft bearing seat of the reducer, and it should comply with the provisions of 4.5.2.6. 5.7 Use the laboratory material abrasion test to determine the service life of the grinding roller and grinding disc lining. 6 Inspection Rules
6.1 The vertical body shall be assembled in the manufacturing factory, and the assembly quality shall be inspected and shall comply with the provisions of 4.4.1~4.4.10. 6.2 Product parts and components should be inspected piece by piece by the manufacturer's inspection department. Purchased and outsourced parts should comply with relevant standards and have certificates of conformity.
6.3 Factory inspection shall be carried out in accordance with the relevant provisions of 4.1.1～4.1.8, 4.2.2, 4.2.3, 4.2.8～4.2.11, 7.1～7.4. If the inspection is successful, a product qualification certificate shall be issued| |tt||6.4 Items requiring on-site inspection shall comply with the relevant provisions of this standard. 6.5: Type inspection shall test all the requirements specified in this standard. Type inspection shall be carried out when one of the following circumstances occurs: a) New product trial production or first product .
b) When there are major improvements in product structure, materials, and processes, which may affect product performance. c) When production is resumed after a long-term suspension.
d) When the factory inspection results are significantly different from the previous type inspection. e) When the national quality supervision agency proposes type inspection requirements. 6.6 One prototype for type inspection should be selected from qualified products. 6
2.1 Load test operation should be carried out after passing the no-load test operation. 4.5.2.2 The vertical mill load test operation is carried out on site, and the operation time should not be less than 12 hours. 4.5.2.3 The working temperature of grinding rolling bearings should not exceed 120℃, and the working temperature of other rolling bearings should not exceed 90℃. 4.5.2.4 The oil supply temperature of the reducer lubricating oil should not exceed 50℃: the working temperature of the moving bearing of the reducer should not exceed 70℃, and the working temperature of the rolling bearing should not exceed 70℃.
4.5.2.5 Each hydraulic, lubrication and pneumatic system should operate normally. 4.5.2.6 During load operation, the vibration speed at the input bearing seat of the reducer shall not be greater than 5mm/s.4.6 Painting and anti-rust requirements
The painting and anti-rust of the vertical mill shall comply with the provisions of JB/T5000.12--1998. 5 Test method
5.1 Turning test checks the rotational flexibility of each rotating part. The turning test shall not be less than 3 turns and there shall be no jamming phenomenon. 5.2 The vertical mill main reducer shall be tested with no load in the manufacturer. The running time shall not be less than 2 hours. The cleanliness and noise shall be checked separately and shall comply with the provisions of 4.3.7.1 and 4.3.7.2.
5.3 No-load test run can add a material layer of appropriate thickness to maintain the specified gap between the grinder and the grinding disc. 5.4 Hardness test:
5.4.1 Instruments
Hardness tester, portable Grinding machine, metallographic sandpaper. 5
JB/T6126—2002
5.4.2 Method
Use a grinding wheel and metallographic sandpaper to grind evenly on both sides of the non-working surface of the grinding plate and the grinding disc lining plate. Take out four test surfaces with an area of ??500mm2 and a surface temperature of R1.6um. Aim the hardness meter vertically at the test surface for testing. The test values ??will be automatically recorded. Each test surface will measure three points. The arithmetic mean of each measurement value will be calculated. Should comply with the relevant provisions in Table 2 of 4.3.1. 5.5 No-load test run inspection:
5.5.1 Use a rotational speed measuring instrument to detect the rotational speed of the separator, and it shall comply with the provisions of 4.5.1.3. 5.5.2 Use a pressure gauge to check the grinding bearing seal, and it should comply with the requirements of 4.4.7. 5.5.3 Use a sound level meter to detect the sound of vertical grinding. The detection should be carried out at a distance of 1m from the vertical grinding wheel seat and a height of 1.5m. The detection method shall be carried out in accordance with the relevant provisions of GB/T3768-1996, and shall comply with the provisions of 4.5.1.6. 5.5.4 Use a laser measuring instrument to detect the installation quality of the grinding and housing, and shall comply with the provisions of 4.4.3~4.4.5. 5.6 Load test run on-site inspection:
5.6.1 The output test is based on the normal operation value of the on-site equipment. 5.6.2 Use a temperature measuring instrument to detect the oil temperature of the reducer, and it shall comply with the provisions of 4.5.2.4. 5.6.3 The grinding fineness test shall be carried out according to the method specified in GB/T13451991. 5.6.4 Use a thermometer to detect the bearing temperature at the bearing seat, and shall comply with the provisions of 4.5.2.3. 5.6.5, power test, the voltage value U and current value displayed by the main motor voltmeter and ammeter in the control cabinet are used to calculate the power P according to the following formula:
P=3Ulcos
where: | |tt||P---power, unit is W:
U—voltage, unit is V:
—current, unit is A; Www.bzxZ.net
cos-power factor.
5.6.6 Grinding disc speed and separation speed test. 5.6.7 Use a vibration test instrument to detect the vibration speed at the input shaft bearing seat of the reducer, and it should comply with the provisions of 4.5.2.6. 5.7 Use the laboratory material abrasion test to determine the service life of the grinding roller and grinding disc lining. 6 Inspection Rules
6.1 The vertical body should be assembled in the manufacturer, and the assembly quality should be inspected and should comply with the provisions of 4.4.1~4.4.10. 6.2 Product parts and components should be inspected piece by piece by the manufacturer's inspection department. Purchased and outsourced parts should comply with relevant standards and have certificates of conformity.
6.3 Factory inspection shall be carried out in accordance with the relevant provisions of 4.1.1～4.1.8, 4.2.2, 4.2.3, 4.2.8～4.2.11, 7.1～7.4. If the inspection is successful, a product qualification certificate shall be issued| |tt||6.4 Items requiring on-site inspection shall comply with the relevant provisions of this standard. 6.5: Type inspection shall test all the requirements specified in this standard. Type inspection shall be carried out when one of the following circumstances occurs: a) New product trial production or first product .
b) When there are major improvements in product structure, materials, and processes, which may affect product performance. c) When production is resumed after a long-term suspension.
d) When the factory inspection results are significantly different from the previous type inspection. e) When the national quality supervision agency proposes type inspection requirements. 6.6 One prototype for type inspection should be selected from qualified products. 6
2.1 Load test operation should be carried out after passing the no-load test operation. 4.5.2.2 The vertical mill load test operation is carried out on site, and the operation time should not be less than 12 hours. 4.5.2.3 The working temperature of grinding rolling bearings should not exceed 120℃, and the working temperature of other rolling bearings should not exceed 90℃. 4.5.2.4 The oil supply temperature of the reducer lubricating oil should not exceed 50°C: the working temperature of the moving bearing of the reducer should not exceed 70°C, and the working temperature of the rolling bearing should not exceed 70°C.
4.5.2.5 Each hydraulic, lubrication and pneumatic system should operate normally. 4.5.2.6 During load operation, the vibration speed at the input bearing seat of the reducer shall not be greater than 5mm/s.4.6 Painting and anti-rust requirements
The painting and anti-rust of vertical mills shall comply with the regulations of JB/T5000.12--1998. 5 Test method
5.1 Turning test checks the rotational flexibility of each rotating part. The turning test shall not be less than 3 turns and there shall be no jamming phenomenon. 5.2 The vertical mill main reducer shall be tested with no load in the manufacturer. The running time shall not be less than 2 hours. The cleanliness and noise shall be checked separately and shall comply with the provisions of 4.3.7.1 and 4.3.7.2.
5.3 No-load test run can add a material layer of appropriate thickness to maintain the specified gap between the grinder and the grinding disc. 5.4 Hardness test:
5.4.1 Instruments
Hardness tester, portable Grinding machine, metallographic sandpaper. 5
JB/T6126—2002
5.4.2 Method
Use a grinding wheel and metallographic sandpaper to grind evenly on both sides of the non-working surface of the grinding plate and the grinding disc lining plate. Take out four test surfaces with an area of ??500mm2 and a surface temperature of R1.6um. Aim the hardness meter vertically at the test surface for testing. The test values ??will be automatically recorded. Each test surface will measure three points. The arithmetic mean of each measurement value will be calculated. Should comply with the relevant provisions in Table 2 of 4.3.1. 5.5 No-load test run inspection:
5.5.1 Use a rotational speed measuring instrument to detect the rotational speed of the separator, and it shall comply with the provisions of 4.5.1.3. 5.5.2 Use a pressure gauge to check the grinding bearing seal, and it should comply with the requirements of 4.4.7. 5.5.3 Use a sound level meter to detect the sound of vertical grinding. The detection should be carried out at a distance of 1m from the vertical grinding wheel seat and a height of 1.5m. The detection method shall be carried out in accordance with the relevant provisions of GB/T3768-1996, and shall comply with the provisions of 4.5.1.6. 5.5.4 Use a laser measuring instrument to detect the installation quality of the grinding and housing, and shall comply with the provisions of 4.4.3~4.4.5. 5.6 Load test run on-site inspection:
5.6.1 The output test is based on the normal operation value of the on-site equipment. 5.6.2 Use a temperature measuring instrument to detect the oil temperature of the reducer, and it shall comply with the provisions of 4.5.2.4. 5.6.3 The grinding fineness test shall be carried out according to the method specified in GB/T13451991. 5.6.4 Use a thermometer to detect the bearing temperature at the bearing seat, and shall comply with the provisions of 4.5.2.3. 5.6.5, power test, the voltage value U and current value displayed by the main motor voltmeter and ammeter in the control cabinet are used to calculate the power P according to the following formula:
P=3Ulcos
where: | |tt||P---power, unit is W:
U—voltage, unit is V:
—current, unit is A;
cos-power factor.
5.6.6 Grinding disc speed and separation speed test. 5.6.7 Use a vibration test instrument to detect the vibration speed of the reducer input shaft bearing seat, and it should comply with the provisions of 4.5.2.6. 5.7 Use the laboratory material abrasion test to determine the service life of the grinding roller and grinding disc lining. 6 Inspection Rules
6.1 The vertical body should be assembled in the manufacturer, and the assembly quality should be inspected and should comply with the provisions of 4.4.1~4.4.10. 6.2 Product parts and components should be inspected piece by piece by the manufacturer's inspection department. Purchased and outsourced parts should comply with relevant standards and have certificates of conformity.
6.3 Factory inspection shall be carried out in accordance with the relevant provisions of 4.1.1～4.1.8, 4.2.2, 4.2.3, 4.2.8～4.2.11, 7.1～7.4. If the inspection is successful, a product qualification certificate shall be issued | |tt||6.4 Items requiring on-site inspection shall comply with the relevant provisions of this standard. 6.5: Type inspection shall test all the requirements specified in this standard. Type inspection shall be carried out when one of the following circumstances occurs: a) New product trial production or first product .
b) When there are major improvements in product structure, materials, and processes, which may affect product performance. c) When production is resumed after a long-term suspension.
d) When the factory inspection results are significantly different from the previous type inspection. e) When the national quality supervision agency proposes type inspection requirements. 6.6 One prototype for type inspection should be selected from qualified products. 6
4 Items requiring on-site inspection should comply with the relevant provisions of this standard. 6.5: Type inspection should test all the requirements specified in this standard. Type inspection should be carried out when one of the following circumstances occurs: a) New product trial production or first product.
b) When there are major improvements in product structure, materials, and processes, which may affect product performance. c) When production is resumed after a long-term suspension.
d) When the factory inspection results are significantly different from the previous type inspection. e) When the national quality supervision agency proposes type inspection requirements. 6.6 One prototype for type inspection should be selected from qualified products. 6
4 Items requiring on-site inspection should comply with the relevant provisions of this standard. 6.5: Type inspection should test all the requirements specified in this standard. Type inspection should be carried out when one of the following circumstances occurs: a) New product trial production or first product.
b) When there are major improvements in product structure, materials, and processes, which may affect product performance. c) When production is resumed after a long-term suspension.
d) When the factory inspection results are significantly different from the previous type inspection. e) When the national quality supervision agency proposes type inspection requirements. 6.6 One prototype for type inspection should be selected from qualified products. 6
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