Some standard content:
ICS73.120
Machinery Industry Standard of the People's Republic of China
JB/T53532-2000
Rotary Drum Dryer
Product Quality Grading
(Internal Use)
Published on August 31, 2000
State Bureau of Machinery Industry
Implementation on December 1, 2000
JB/T53532—2000
This standard is a revision of JB/T53532-94 "Rotary Drum Dryer Product Quality Grading". Compared with JB/T53532-94, the main technical content of this standard has been changed as follows: the contents of "evaporation intensity" and "heat consumption" in the original standard of the whole machine performance have been deleted; the requirements of "whole machine no-load noise" have been added to the whole machine performance; the assembly requirements of "transmission device" and "support device" have been added to the assembly requirements; the quality requirements of simplified welds have been added to the main parts processing quality inspection items. The product standard based on this standard is JB/T8852.22000 "Rotary Drum Dryer". This standard replaces JB/T53532-94 from the date of implementation. This standard is proposed and managed by the National Technical Committee for Standardization of Mining Machinery. The drafting unit of this standard: Chengde Conveyor Group Co., Ltd. The main drafters of this standard: Liu Guoqin, Li Changshan, Liu Chunbo, Guo Ming. This standard was first issued in November 1987, and the standard number was adjusted to JB/T53532-94 in September 1994. 1 Scope
Machinery Industry Standard of the People's Republic of China
Rotary Drum Dryer
Product Quality Grading
(Internal Use)
This standard specifies the quality grade, test method and inspection rules of rotary drum dryer products. JB/T53532-2000
Replaces JB/T53532-94
This standard is applicable to the assessment of the quality grade of rotary drum dryer products with inner diameters of Φ1.0m, Φ1.2m, Φ1.5mΦ1.8m, Φ2.0m, Φ2.2m, Φ24m, 2.8m, Φ3.0m, Φ3.2m, Φ3.4m and Φ3.6m. 2 Referenced standards
The clauses contained in the following standards constitute the clauses of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised. Parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T 6991999
GB/T 7001988
GB/T1720—1979
GB/T1958—1980
GB/T3177—1997
GB/T3181—1995
GB/T3323—1987
GB/T3768——1996
GB/T 6060.2—1985
GB/T 94391988
GB/T10095—1988
GB/T11352—1989
3 Quality grades
3.1 Grading principles
High-quality carbon structural steel
Carbon structural steel
Determination of paint film adhesion
Provisions for testing shape and position tolerances
Inspection of smooth workpiece dimensions
Standard samples of paint film color
Steel fusion welded butt joints Radiography and quality gradingAcoustics Sound pressure method to determine the sound power level of the noise sourceSimple method of measuring the surface by envelope above the reflecting surfaceSurface roughness comparison sampleGrinding, turning, boring, milling, inserting and planing surfaceGray cast iron parts
Involute cylindrical gear accuracy
General engineering castingsCarbon steel parts
The quality grade of the product is determined according to the adopted standards, the technical level of the product, the inspection of the finished product, the quality inspection during the production process and the user's evaluation opinions. It is divided into two grades: qualified products and first-class products. 3.1.1 Qualified products
3.1.1.1Organize production according to the current standards, and the actual quality level meets the requirements of the corresponding standards. 3.1.1.2The quality of the product production process is stable. 3.1.1.3Accessories and supporting products can ensure that the main machine reaches the level of qualified products. 3.1.1.4
User evaluation: Product performance meets the use requirements Approved by the State Bureau of Machinery Industry on 2000-08-31 Implemented on 2000-12-01
3.1.2 First-class products
JB/T53532-2000
3.1.2.1 The product's structure, performance, precision, safety, hygiene, reliability and lifespan and other quality indicators have reached the general international level, and the physical quality level has reached the general level of similar international products. 3.1.2.2 The quality of the product production process is stable. 3.1.2.3 The accessories and supporting products can ensure that the main machine reaches the first-class level. 4 User evaluation: The product has a good use effect and the product is competitive in the domestic market. 3.1.2.4
2 Quality grade indicators
The quality grade indicators of the rotary dryer should meet the requirements of Table 1. Table 1
Quality grade
Qualified products
Finished product inspection items
Qualified rate
Finished product inspection
Qualified rate of assembly, painting and packaging quality inspection items
≥90%
Finished product inspection items shall comply with the provisions of Table 2
Quality requirements
Performance of the whole machine
Performance of components
Comprehensive technical requirements
Reliability and life
Quality requirements
Project name
Meshing condition of large gear under heating state
No-load noise of the whole machine
Cleanliness of the reducer
Noise of the reducer
Sealing of the reducer
Precision of gears of the reducer
Life of the reducer
Working of the large gear ring and roller under heating
Contact length between the roller and the supporting wheel
Lubrication condition of the transmission mechanismTemperature rise of the bearing
Seals at both ends of the cylinder
First overhaul period
Assessment parts
Service life
Guide plate
Seal ring
dB （A）
dB（A）
Table 2（End）
Item name
Main parts
Qualified rate of key items
Qualified rate of main items
≥90%
≥93%
Value or requirement
Qualified products
≥30 (along tooth height)
≥40 (along tooth length)
No oil leakage
No oil seepage
Not less than 8-8-7 specified in GB/T10095
≥36000
Should be not less than 75% of the working width of the rolling ring|| tt||Each transmission mechanism is well lubricated, the bearing temperature rise does not exceed 30℃, and there is no leakage
≥7500
Dry coal ≥15000
≥10000
Trapezoidal labyrinth type ≥15000
≥15000
Value or requirement
Compatibility
Safety and hygiene
JB/T53532—2000
Motors and other auxiliary equipment under normal working conditions
Protective facilities
Sealing device
Note: a in No. 2 is the center distance of the reducer, mm. Quality inspection of the production process
The quality inspection items for assembly, painting and packaging shall comply with the provisions of Table 3. Table 3
Item name
Radial runout of large gear ring and end face runout 2
Radial runout of both ends of the cylinder
Straightness of the cylinder outer surface
Reserved thermal expansion barrier between the rolling ring and the saddle
Item name
Medium 20m
Qualified products
First-class products
Meet the corresponding grade requirements
The rotating part of the transmission device should be equipped with a protective cover
No internal gas leakage
Value or requirement
Qualified product
Φ1.0~Φ1.2m
Medium 1.5~01.8m
Φ2.0~Φ2.4m
Medium 2.8~3.6m
Table 3 (continued)
Inlet end 10~15
Outlet end 0.5~1.0
Inlet end 15~2.0
Outlet end 0.5~1.0
Inlet end 20-25
Outlet end 10~15
Value or requirement
Reserve thermal expansion gap between roller and saddle
JB/T53532—2000
Limit deviation of axial offset of center line of tooth width between large ring gear and small gear
Limit deviation of cross center line of large ring gear and small gear when cold and center line of design position of support wheel and retaining wheel base
Limit deviation of longitudinal center line of support wheel and retaining wheel base Collinearity tolerance valueTolerance value of transverse centerline distance of two groups of rollersTolerance value of elevation of two groups of rollers
Tolerance value of elevation of two rollers in the same group
Wheel device
Wheel blocking device
Wheel device cooling water pipeline
Lubricating device
Rust removal level
Main large surface paint
Paint surface
Paint film thickness
Exposed surface of the whole machine
Project name
Electricity 30m
Table 3 ( Finished)
Qualified products
-Qualified products
Inlet end 25~3.0
Outlet end 15~2.0
025mt (2-3mm) range
(m is the gear module)
Rotate flexibly
Rotate flexibly
Under the pressure of 0.44-0.49MPa, keep no leakage for 5
min, smooth
Pressure test at 1.5 times the rated working pressure
No flow marks , bubbles
No paint leakage, shedding, cracks, uneven color
Total thickness is 75-105um
Numerical value or requirement
Marking outside the box
Random documents
Installation drawing
List of wearing parts
Installation and operating instructions
JB/T53532—2000
Packaging boxes, bundling parts, exposed processed surfaces and documents
1 If the roller device has no cooling device, the 14th test may not be carried out. 2 For dryers without lubrication devices, test No. 15 may not be carried out. Specifications
Qualified products
First-class products
Complete, unified, accurate
Firm, with anti-rust and anti-scratch measures
3 For dryers with a diameter greater than 2.4m that are not installed in the manufacturer due to limited domestic transportation conditions, tests No. 1 to 1 may not be carried out. 2
2 The inspection items for the processing and manufacturing quality (key items and main items) of major parts shall at least include the contents specified in Table 4. 3.4.2
Part name
Serial numberPart name
Inspection items and requirements
Material: Mechanical properties not less than Q235-A in GB/T700Length deviation: shall not exceed ±5L10mm (L is the length of the cylinder, m)Φ1.0m
Roundness tolerance
Limit deviation of circumferential length
Dislocation of the cylinder joint shall not exceed 2mm
Medium 1.0Medium 1.5m
Medium 1.8~Φ2.4m
$28~Φ3 .6m
Internal quality of weld: meet the requirements of grade IⅢII weld specified in GB/T3323≤20mm
≤25mm
≤35mm
≤45mm
≤55mm
≤65mm
≤70mm
Surface quality of weld: no cracks are allowed, the undercut shall not be greater than 0.5mm, the continuous length of undercut shall not be greater than 100mm, and the total length of undercut of each weld shall not exceed 10% of the total length of the weld; the edge formed by the butt weld Angle E shall not be greater than (0.1S+1) mm, and shall not be greater than 3 mmTable 4 (continued)
Inspection items and requirements
Gird gear
Pinion gear
Pinion gear shaft
Traveling wheel shaft
Serial numberPart name
JB/T53532—2000
Material: Mechanical properties not less than HT30C cast steel specified in GBT9439: not less than ZG310-570 specified in GB/T11352Tooth accuracy: not less than GB/T10095 Specified 11-grade tooth surface roughness: R6.3um
Tooth profile surface: no cracks, no sand holes, pores and other casting defects that affect performance Material: Mechanical properties not less than 45 steel specified in GBT69 Tooth accuracy: not less than 11-grade specified in GB/T10095 Heat treatment hardness: 156~217HB, and the hardness of the pinion should be higher than that of the large gear ring, and the difference is not less than 20HE Tooth surface roughness: R.6.3um
Inner hole size tolerance: H7
Inner hole surface roughness: R.32 um
Shaft diameter size tolerance for matching with pinion k6
Shaft diameter surface roughness for matching with pinion: R3.2umShaft diameter size tolerance for matching with bearing 16 (m6)Shaft diameter surface roughness for matching with bearing: R1.6umHeat treatment hardness: 197~241HB
Material: Mechanical properties shall not be lower than ZG310-570 specified in GBT11352Surface hardness: 156-217HB
Working surface: There shall be no cracks and no more than five casting defects with a diameter and depth exceeding 2mm, and Defect distance shall not be less than 250mm
Outer diameter dimension tolerance hll
Outer circle surface roughness: R.63um
Conical surface roughness: R.63umwwW.bzxz.Net
Material: Mechanical properties shall not be lower than ZG310-570 specified in GBT11352※Surface hardness: 179~229HB and the surface hardness of the supporting wheel shall be higher than the surface hardness of the rolling ring, and the difference shall not be less than 20HBWorking surface: No casting defects that affect the performance shall be leftInner hole dimension tolerance H7 (H8, JS7)
Inner hole Surface roughness: R, 32um
Outer surface roughness: R63um
Shaft diameter tolerance for bearing: rolling bearing k6, sliding bearing f9Shaft diameter surface roughness for bearing: R1.6umShaft diameter tolerance for roller 7 (17)Shaft diameter surface roughness for roller: R3.2umQuenching and tempering hardness: 230-260HB
Coaxiality of shaft diameter at both ends of bearing and roller: Grade 8Table 4 (Complete)
Inspection items and requirements
JB/T53532— 2000
Material: Mechanical properties not less than ZG310-570 specified in GBT11352 ※Surface hardness: 179-229HB
Conical surface roughness: R6.3um
Inner hole size tolerance for bearing K7 (J7, M7) Inner hole surface roughness for bearing: R3.2um Diameter size tolerance for copper bushing d9
Diameter surface roughness for copper bushing: R3.2um1Items with ※ are key items:
26 key items and 104 main items. 5User evaluation opinions
There should be user's certification materials or performance test reports on product quality evaluation as the basis for product quality grade assessment4Test method
Test conditions
1The test product should be a qualified product for storage. 4.1.1
4.1.2 Test site:
a) The environmental noise value should be 10dB (A) lower than the noise value of the tested sample; b) The power supply voltage deviation is less than ±5%
Test content
The quality inspection items, methods and required instruments for the whole machine, finished product, assembly, painting and packaging should comply with the provisions of Table 5 Table 5
Test items and methods
Radial runout of the large gear ring: Use a special stylus disc and a steel ruler to detect the end face runout of the large gear ring: Use a special stylus disc and a steel ruler to detect the radial runout of both ends of the cylinder: Use a special stylus disc and a steel ruler to detect the straightness of the outer surface of the cylinder: Use a steel wire and a steel ruler to detect the reserved thermal expansion gap between the roller ring and the saddle: Use a feeler gauge to detect the large gear Deviation of the center line of the tooth width between the ring and the pinion: Use a steel ruler gun to measure the tooth top clearance between the large ring gear and the small gear (when cold): Use a feeler gauge to detect the contact spots on the tooth surface of the large ring gear and the small gear: Use the red lead stamping method to check that the supporting wheel and the retaining wheel device are flexible in rotation: Turn the supporting wheel device cooling water pipeline by hand: Pressure test Table 5 (complete)
Test items and methods
Testing instruments
Name and specifications
Steel ruler
Steel ruler
Steel ruler
Steel ruler
Steel ruler
Pressure gauge
Testing instruments
Reducer noise: Measured with a sound level meter|| tt||Lubrication device: pressure test
JB/T53532—2000
Main large surface paint: visual inspection
Appearance quality
Paint surface: visual inspection
Exposed surface of the whole machine: and measurement
Paint film thickness: measured with coating thickness gauge
Name and specification
Sound level meter
Pressure gauge
Coating thickness gauge
Main parts processing and manufacturing quality inspection items (key items and main items), methods and required instruments should comply with the provisions of Table 6 Table 6
Inspection items
Dimensional accuracy
Surface roughness
Tooth precision
Intrinsic quality of weld
Tolerance of shape and position
5 Inspection rules
5.1 Sampling method
Inspection method
Physical and chemical properties test
Inspect as per the provisions of GB/T3177
Comparative inspection as per GB/T6060.2
Measure with hardness tester
Measure with caliper, etc.
Radiography
Inspect as per the provisions of GB/T1958 with dial indicator, magnetic stand, V-shaped iron, flat plate, etc.
5.1.1 Sample for finished product inspection: select one piece from the qualified products put into storage. Test instruments
Name and specification
Outside micrometer
Inside micrometer
Vernier caliper
Steel ruler
Steel tape measure
Roughness comparison sample
Rockwell hardness tester
Brinell hardness tester
Tooth thickness caliper
Normal micrometer
X-ray flaw detector
Dial indicator
5.1.2 Samples in the production process: One unit is selected from the qualified parts in the warehouse. If there are not enough parts, the whole machine can be disassembled for inspection (the parts of large products can be based on the inspection record of the current product process). 5.2 Judgment rules
5.2.1 All test items are only allowed to be inspected and evaluated in sampling. If any item is unqualified, it is not allowed to be doubled for inspection. 5.2.2 During the testing process, the following situations will be judged as unqualified items: 8
JB/T53532—2000
a) Items that should be inspected are not inspected (the main items between processes can be checked according to the original inspection records); b) Physical properties, chemical properties, flaw detection and other items of materials cannot be tested on site and there are no original records or test reports. 5.3 Evaluation results
5.3.1 Based on the actual measured results of the product, four indicators should be calculated: a) Qualification rate of finished product inspection items:
b) Qualification rate of assembly, painting and packaging quality inspection items; c) Qualification rate of key items of major parts:
d) Qualification rate of major items of major parts.
According to the lowest grade of the actual measurement results, the quality grade of the whole batch of products has been determined. For a batch of products with a certain grade, the grade of each product should not be higher than the grade set for the batch. 9
Republic of China
Mechanical Industry Standard
Drum Dryer
Product Quality Grading
(Internal Use)
JB/T53532—2000
Published and Distributed by the Mechanical Science Research Institute
Printed by the Mechanical Science Research Institute||tt ||(No. 2, Shouti South Road, Beijing, Postal Code 100044)*
1/16 Printing sheet 3/4 Word count 2Q000
Format 880×1230
First edition in November 2000
Print run 1-500
First printing in November 2000
Price 1500 yuan
No. 2000-174
Mechanical Industry Standard Service Network: http/kvwwJB.ac.cn00
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