Some standard content:
JB/T8086-1999
This standard is a revision of JB/T8086-95 "Friction Welding Machine". In addition to making editorial changes to JB/T8086-95 in accordance with the requirements of GB/T1.1-1993 and GB/T1.3-1997, this standard also makes the following changes to the relevant technical contents: 1. Cancel the inspection item 5.2.4 in the original factory inspection items and change it to type inspection; 2. Eliminate the original 8.1d).
From the date of implementation, this standard will replace Appendix A of JB/T8086-95 and become the standard appendix.
This standard is proposed and managed by the National Electric Welding Machine Standardization Technical Committee. The drafting unit of this standard: Changchun Welding Machine Manufacturing Plant. The main drafters of this standard: Cong An;, Fu Minzheng. Yi Xiaoniu Standard Nanny
Machinery Industry Standard of the People's Republic of China
Friction Welding Machine
Friction Welding Machine
This standard specifies the terminology, type, parameters, technical requirements and accuracy of friction welding machine. JB/T 8086-1999
Replaces JB/T8086-95
This standard applies to general rotary and inertia friction welding machines (hereinafter referred to as welding machines), but not to vibration friction welding machines. Cited Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. At the time of publication of the standard, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest version of the following standards. GB/T5226.1—1996·Industrial machinery electrical equipment Part 1: General technical conditions GB/T 9061—1988
GB/T10249—1988
GB/T16769—1997
JB/T8356.1—1996
JB/T10051—1999
3 Definitions
General technical conditions for metal cutting machine tools
Model compilation method for electric welding machines
Method for measuring noise sound pressure level of metal cutting machine tools Technical conditions for machine tool packagingWww.bzxZ.net
General technical conditions for hydraulic systems of metal cutting machine tools This standard adopts the following definitions.
3.1 Friction welding machine
A hot pressure welding device that uses the heat generated by the mutual friction between the welded surfaces to make the welded surfaces reach a plastic state, and then quickly forges to complete the welding.
3.2 Rotating fixture
A fixture that moves with the main shaft during welding. 3.3 Moving fixture
A fixture that can only move in the forging direction,
3.4 Fixed fixture
A fixture that does not move during welding.
3.5 Friction pressure
The pressure applied to the end face of the weldment during the friction stage. 3.6 Forging pressure
The pressure applied to the end face of the weldment during the forging stage. 3.7 Forging force
The force applied to the end face of the weldment when the welding machine is running in the forging stage. Approved by the State Bureau of Machinery Industry on August 6, 1999 and implemented on January 1, 2000
3.8 Friction time
The duration of the friction stage.
3.9 Forging time
JB/T8086-1999
The duration of the forging force during the forging stage of the welding machine. 3.10 Wear
The axial reduction of the welded workpiece during the friction stage: 3.11 Forging amount
The axial reduction of the welded workpiece during the forging stage 3.12 Braking time
The duration of the spindle from rated speed to zero. 3.13 Forging speed
The axial reduction of the weldment per unit time during the forging stage: 3.14 Friction speed
The speed of the spindle during the forging stage.
4 Product classification
Welding machines are divided into two types according to the movement mode during welding: 4.1
a) General rotary friction welding machine;
b) Inertia friction welding machine.
4.2 Model compilation should comply with the provisions of GB/T10249. 4.3 Marking example
a) General friction welding machine with a maximum forging force of 250kN: Friction welding machine C-25: b) Inertia friction welding machine with a maximum forging force of 63kN: Inertia friction welding machine CG-6.3. Models and main parameters are shown in Table 1.
CG-10
c-12
CG-12
CG-16
Note: If necessary, the R10 number can be selected according to multiples of 10. 5 Technical requirements
5.1 General requirements
CG—20
5.1.1 The welding machine shall ensure reliable operation under the following conditions: a) Ambient air temperature range
During welding
During transportation and storage
b) Relative air density
5~40℃;
-25~+55℃.
CG—25
CG—32
c—50
CG—50
CG—63
C—80
CG—80
At 40℃
At 20℃
≤50%:
≤90%
c) Cooling water inlet temperature 5~30℃.
JB/T 8086-1999
d) The dust, acid, corrosive gas or substance in the surrounding air shall not exceed the normal content, except those generated by the welding process. There shall be no severe vibration and bumps in the use place. e) The altitude shall not exceed 1000ms
f) The power supply voltage of the power grid is 380V, and its voltage fluctuation value is within ±10%. 5.1.2 The raw materials, purchased components and instruments of the welding machine shall comply with the relevant standards: 5.1.3 The lubrication system and cooling system of the welding machine shall be reliable to ensure good lubrication and cooling: 5.1.4 The welding machine adopts hydraulic and electromagnetic clamping mechanisms. When the pressure change exceeds the specified value or the power is interrupted, the clamping mechanism should not lose the clamping ability before the spindle brakes to ensure safety: The welding area should be equipped with a safety protection baffle: 5.2 Performance requirements
5.2.1 The rotating and sliding parts of the welding machine should move flexibly, accurately and reliably without obstruction. 5.2.2 The hydraulic system of the welding machine should be able to withstand 115% of the rated pressure, and the hydraulic system shall not leak: 5.2.3 When the welding machine works continuously, the spindle bearing temperature shall not be higher than 70℃, the temperature rise shall not exceed 40K, the hydraulic shaft temperature shall not exceed 60℃, and the wet rise shall not exceed 30K.
5.2.4 The speed drop of the spindle in the friction stage should not be greater than 5% of the no-load speed. 5.2.5 Spindle braking time
The braking time of general rotary friction welding machines is shown in Table 2. Table 2
Top forging square
10-100
100~400
400-1000
5.2.6 The fluctuation value of the spindle cylinder force is not greater than 10%. 5.2.7 The top forging speed of the welding machine should not be less than 20mm/s. 5.2.8 The welding machine must ensure the coaxiality requirements of the weldment. The inspection items are shown in Appendix A: 5.2.9 The noise of the welding machine should not be greater than 85dB (A). 5.3 Hydraulic system
The hydraulic system should comply with the relevant provisions of JB/T10051. 5.4 Electrical system
The electrical system of the welding machine shall comply with the relevant provisions of GB/T5226.1. 5.5 Appearance quality of the welding machine
5.5.1 The appearance quality of the welding machine shall comply with the appearance quality requirements in GB/T9061. Braking time
JB/T8086-1999
5.5.2 The paint surface of the welding machine shall be flat, smooth, without sagging, and comply with the provisions of relevant standards. 5.5.3 The exposed processing surface shall not have no bumps, scratches, rust and other damage. 5.6 Quality assurance
5.6.1 The welding machine shall comply with the requirements of this standard and be manufactured in accordance with the drawings and technical documents approved by the prescribed procedures. 5.6.2 The mainframe of the welding machine and its control system should be shipped together with complete accessories: 5.6.3 Under the condition that the user complies with the transportation, storage and use rules of the welding machine, within 12 months from the date of use by the user, but within 18 months from the date of shipment from the manufacturer, if the welding machine is damaged or malfunctions due to poor manufacturing, the manufacturer shall be responsible for repairing or replacing parts for the user free of charge:
6 Inspection method
6.1 Start the welding machine to perform an empty running simulation test, with the running time not less than 30 minutes: 6.2 Perform welding simulation tests continuously for 30 to 100 times, but not less than 2 hours, to test the flexibility and reliability of the welding machine. 6.3 Start the spindle to rotate, and the temperature rise rate shall not exceed 2℃/h. Use a spot thermometer to measure the temperature and temperature rise of the spindle bearing and the temperature and temperature rise of the hydraulic oil, which shall comply with 5.2.3 requirements.
6.4 Use a tachometer to measure the spindle speed and friction speed when no-load, and the ratio of the total full-no-load speed is not greater than 5%. 6.5
Apply 115% of the rated pressure to the hydraulic system for 5 minutes, which complies with Article 5.2.2. 6.6
When welding, the difference between the main cylinder pressure gauge value and the preset value and the ratio of the preset value comply with Article 5.2.6. 6.7
Use a tachometer and a photoelectric oscilloscope to measure the spindle braking time, which complies with Article 5.2.5: 6.8
Use a displacement sensor and a photoelectric oscilloscope to measure Upsetting speed, in accordance with 5.2.7: 6.9
Inspect the geometric accuracy and working accuracy of the welding machine according to the inspection method in Appendix A: 6.10 Inspect the noise of the welding machine according to GBT16769 standard to be no more than 85dB (A) 6.11
Inspect the appearance, cleanliness and other requirements by hand feel and visual inspection: 6.12 Inspect the electrical system and hydraulic system according to GB/T5226.1 and JB/T10051 standards: 7 Inspection rules
7.1 Each welding machine shall be inspected before leaving the factory, and shall be accompanied by a certificate of conformity before leaving the factory. 7.2 Factory inspection items: 5.2.1: 5.2.2: 5.2.3: 5.5; 5.2.87.3 Type inspection items: Inspect all items of technical requirements according to the inspection method. 8 Marking, packaging, transportation and storage
8.1 The product label of the welding machine should be fixed in a conspicuous position, and its contents should be as follows: a) Manufacturer’s name:
b) Friction welding machine model;
c) Maximum upset force, kN;
d) Factory number;
e) Manufacturing date;
8.2 The welding machine should be treated with anti-rust treatment before packaging, and the anti-rust treatment of the welding machine should comply with the provisions of relevant standards. 8.3 The packaging of the welding machine should comply with the provisions of JB/T8356.1. 30
JB/T8086-1999
8.4 The welding machine should be protected from rain during long-term storage and transportation. The warehouse should be well ventilated, with the temperature within the range of 25~+55℃ and the relative humidity not exceeding 85%.
JB/T80861999
Appendix A
(Appendix of the standard)
Geometric accuracy and working accuracy of welding machine
Inspection items
Guide rail accuracy
a) Straightness of longitudinal guide rail in vertical plane
b) Parallelism of transverse guide rail
Runout of spindle end
a) Spindle positioning|| b) the runout of the spindle neck, b) the runout of the spindle shaft shoulder bearing surface (near the edge)
the runout between the rotating fixture axis centerline and the spindle rotation axis centerline
≤500
Maximum upsetting
≤100
>100~400
>400~1000
Maximum forging
≤100
>100~400
>400~1000
8, b:0.02
a, b:0.025||tt| |a, b: 0.03
a, b: 0.04
ed: 0.07
Level
Indicator
Testing method
a) Place a level
on the slide table vertically, and move the slide table at equal distances for testing:
Arrange the level readings in sequence,
draw the error curve of the guide rail, and the maximum
coordinate value of the line connecting the two end points of the
line is the
straightness error of the entire length of the guide rail;
b) Place a level
on the slide table horizontally, and move the slide table at equal distances for testing
(the moving distance is the same as a), and the level
reads the whole measuring length|| The maximum algebraic difference is the parallelism error of the guide rail. Fix the indicator so that its probe touches the surface of the spindle centering journal: a) the spindle centering journal surface; b) the spindle shoulder support and close to the edge. Rotate the spindle for inspection: a and b errors are calculated separately. The maximum difference in the indicator reading is the error of runout. Inspect the indicator rod in the center of the rotating fixture. Fix the indicator so that its probe touches the surface of the inspection grid. a) Close to the fixture end; b) Rotate the spindle 100 mm away from the fixture for inspection. Loosen the inspection rod.
Rotate 90 degrees relative to the main axis and re-|tt||clamp the test rod. Repeat the test three times in sequence. a, 6 errors are calculated respectively. The arithmetic mean of the four measurement results is the radial runout error. JB/T80861999 Table A1 (end) Inspection items Parallelism of the movable fixture or fixed fixture to the bed base surface Spindle axis to the bed base surface Coaxiality of the movable fixture or fixed fixture axis to the spindle axis Maximum pre-forging >100~400 >400~1000
Maximum forging
>100~400
>400-1000
Maximum forging
>100~400
>400~1000
ab:0.025
a, b:0.04
a, b:0.02
ab:0.025
a, b:0.04
Indicator
Inspection option
Indicator
Inspection rod
Indicator
Inspection rate
Inspection method
When moving the fixture or adjusting the necessary tools
fire inspection option. The indicator probe is integrated on the upper busbar a and the side busbar b of the test grid: ab errors are calculated separately, and the maximum difference in the indicator readings is the parallelism error. Fix the indicator on the moving slide so that its probe touches the surface of the test sample, move the slide for inspection, rotate the spindle 180 degrees and repeat the test. The ratio of the algebraic sum of the results of the two measurements is the parallelism error: a, b errors are calculated separately. Make the end face of the mobile fixture carrying the fixed fixture 300mm away from the south of the spindle. In the inspection tool with mobile fixture or fixed fixture, fix the indicator on the main transmission inspection tower, embed the probe in the mobile fixture or the fixed inspection tool, inspect the rotating main shaft, half of the maximum sign value of the indication reading is the coaxiality error of the two axis lines, and the maximum difference of the readings is the allowable error value. Precision inspection
Graph and specimen size
Specimen size:
1L≥1501=125
2Select the maximum weldable piece specified in the design
3Special welding machine (too large or too
small)When the specimen is not easy to meet, the actual weldment test can be used, and the result meets the user's joint requirements,
4The position of the V-shaped iron should ensure the measurement reference
JB/T 8086-1999
Maximum upset
>100400
>400~1000
a:s0.20
b:mid0.35
b:mid0.60
b:±0.60
b:b1.00
V-shaped iron
indicator
test method
Put the longer section of the standard test piece in the
V-shaped iron, and the indicator touches
a, 20mm away from the welding section of the
shorter
test piece, and
b, 100mm away from
a. Rotate the weldment for inspection, and read the
indicator||a and
b respectively. Half of the
maximum
difference in the
readings is the
coaxiality error of the weldment, and the
maximum
difference in the
readings is the allowable value.
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