This standard specifies the test method for QH series enameling equipment. This standard is applicable to QH series enameling equipment. This standard is used together with JB/T 6756.1. JB/T 6756.9-1993 Test method for special equipment for wires and cables Part 9: QH series enameling equipment JB/T6756.9-1993 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
Special Equipment for Wires and Cables
Test Methods
Part 9 QH Series Enameling Equipment
1 Subject Content and Scope of Application
This standard specifies the test methods for QH series enameling equipment. This standard applies to QH series enameling equipment. JB/T6756.993
This standard is used together with JB/T6756.1 "Test Methods for Special Equipment for Wires and Cables Part 1 General Principles". 2 Reference standards
JB/T5812
JB/T5813
JB/T5814
JB/DQ8657
Type and size of winding wire enameling equipment
Technical requirements of winding wire enameling equipment
Basic parameters of special equipment for wires and cables
Product quality classification of special equipment for wires and cables JB/T56053.1Product quality classification of special equipment for wires and cables Enameling equipment JB/DQ8124
3 Idle running performance test
Basic technical requirements for cable equipment
3.1 Preparation before test
Before testing, the equipment should be tested according to the 3 items in JB/T6756.1 a.
b. The environment and test conditions should meet the requirements of JB/T5813. 3.2 Rotation steps and time of the operating mechanism
The take-up device should be gradually adjusted from low speed to the highest speed, and generally operate at three speeds: low, medium and high. The rotation time of each speed should not be less than 30 minutes, and the continuous operation time at the highest speed should not be less than 4 hours. 3.3 Line speed detection
Use a tachometer to measure the rotation speed of the traction wheel or traction roller. The line speed calculation is shown in the following formula: V=Yuan·D·n
Wherein, V-line speed, m/min;
D—diameter of the traction wheel or roller, m;
nThe number of revolutions measured by the tachometer, r/min.
The line speed should meet the design requirements.
3.4 ​​Temperature rise detection
Use a point thermometer to measure the temperature of the bearing cover and the suspicious point at the rated speed and calculate the temperature rise. 3.5 Noise detection,
According to Article 5.1 of JB/T6756.1, the detection shall be carried out at the highest speed. 3.6 Oven temperature detection.
Simulate the enameling process to give the temperature of each point in the oven, and its highest temperature shall reach the highest temperature allowed by the oven design. The power-on temperature rise must reach a.2
to the given temperature of each point, and maintain it for 24 hours after reaching the highest temperature. It is allowed to use the instruments equipped with this equipment for observation and keep records. Approved by the Ministry of Machinery Industry on August 21, 1993
Implementation on October 1, 1993
JB/T6756.993
The furnace should not have obvious deformation that affects the normal production of the equipment. 8. Use thermocouples and potentiometers to measure the temperature of 3 to 5 points at equal distances on the same cross section. The measured values ​​shall comply with the provisions of JB/T56053.1 standard.
c, after the highest temperature is maintained for 24 hours, use a point thermometer to measure the surface temperature of the furnace body of the drying furnace, and measure the surface temperature of the furnace body in the evaporation zone, the curing zone and the catalytic zone respectively, and take the average value, which should comply with the provisions of JB/T5813. 3.7 Annealing furnace temperature detection
, simulate the annealing process to give the annealing temperature, and its maximum temperature should reach the maximum temperature allowed by the annealing furnace. The power-on heating must reach the given annealing temperature, and maintain it for 24 hours after reaching the highest temperature. It is allowed to observe using the instrument equipped with this equipment. The annealing tube should not have deformation that affects the normal production of the equipment.
b, after the highest temperature is maintained for 24 hours, use a point thermometer to measure the surface temperature of the annealing furnace body, and detect it at the upper, middle and lower parts of the annealing furnace body, and then take the average value, which should comply with the provisions of JB/T5813. 3.8 Inspection of electromechanical safety protection devices
Inspection of electromechanical safety protection devices shall comply with the provisions of Article 5.3 of JB/T6756.1. 4 Load operation performance test
After the equipment passes the idle operation, it shall be adjusted and then tested for load operation performance under normal process conditions. 4.1 Product specification test
After the drying furnace and annealing furnace reach the normal process temperature, select large, medium and small specifications from the production range specified by the equipment as the processing objects, and operate at the maximum speed allowed by each specification. Under the condition that the wire is not painted, observe that the wire after annealing should not be oxidized, the wire tension can be adjusted, and it should be consistent. The wire arrangement should be uniform and flat. The diameter of the wire collected is measured with a grade 1 precision dry ruler, and the wire drawing should be within the range allowed by the standard. After all the above requirements are met, start painting the wire. The quality of the wire after painting should meet the relevant product standards. At least 1 full reel per head for each specification. 4.2 Reliability test
a. Within the operating speed range specified by the equipment, it can run continuously for 72 hours without any fault. b. The change of the given temperature of each zone of the drying furnace shall comply with the provisions of JB/T56053.1. Directly observe the instrument value equipped with the equipment, observe and record it once every 1 hour, and observe and record it 24 times in total. c. The change of the given temperature of the annealing furnace shall comply with the provisions of JB/T56053.1. Directly observe the instrument value equipped with the equipment, observe and record it once every 1 hour, and observe and record it 24 times in total. d. The change of the given traction speed shall comply with the provisions of JB/T56053.1. Use a tachometer to measure once every 2 hours, and measure 12 times within 24 hours. 4.3 Linear speed test
Use a tachometer to directly detect the linear speed of the enameled wire, or use a tachometer to measure the linear speed of the traction wheel or traction roller. The measured value shall comply with the provisions of JB/T56053.1.
4.4 Unit energy consumption detection
Use an electric meter to measure the power consumption of the whole machine. When the equipment is operating normally and the wire is painted, start recording the power consumption of the whole machine in kWh. Record once every 1 hour and record 24 times in 24 hours. Select large, medium and small specifications for detection within the production range specified by the equipment. The average power consumption per kilogram of enameled wire per hour for each specification within 24 hours is used as the unit energy consumption of the enameled wire of this specification. Its value should comply with the provisions of JB/T56053.1.
4.5 Flue gas purification degree detection
Use a test instrument for testing the residual carbon content, according to its operating procedures, take samples from the exhaust outlet for testing, and the measured value should comply with the provisions of JB/T56053.1.
In the absence of the above-mentioned detection conditions, the environmental protection department is allowed to measure the content of harmful residual gases in the exhaust according to the standards of the Ministry of Health. 47
Precision inspection of main parts
JB/T6756.9-93
The inspection of radial circular runout and end circular runout of steering guide wheel shall comply with the provisions of Figure 1 and Table 1. : The inspection of radial circular runout and end circular runout of steering guide wheel assembly shall comply with the provisions of Figure 2 and Table 2. 5.2
6 Precision inspection of whole machine
6.1 The inspection of radial circular runout of traction wheel or traction drum shall comply with the provisions of Figure 3 and Table 3. 6.2 The inspection of radial circular runout of take-up shaft shall comply with the provisions of Figure 4 and Table 4. 7 Appearance quality inspection
The inspection of appearance quality of equipment shall comply with the provisions of Article 5.2 of JB/T6756.1. Figure 1
Test items
The radial runout and end face roundness of the steering guide wheel shall comply with the provisions of
JB/T56053.1
Test tools
1. Measuring stand with indicator
3. V-shaped stand or
or runout meter
Test method
1. Install the guide wheel on the mandrel without gap, and place the mandrel on the V-shaped stand or runout meter, and make the two ends of the mandrel equal in height relative to the flat plate
2. Rotate the mandrel, the indicator contact contacts with the bottom diameter of the guide wheel groove, the guide wheel rotates one circle, and the maximum reading difference of the indicator is its radial roundness 3. Rotate the mandrel, the indicator contact contacts and the end face of the guide wheel Contact, the guide wheel rotates one circle, the maximum reading difference of the indicator is its end face circular runout Inspection items
The radial circular runout
and the end face circular runout
should comply with the provisions of
JB/T56053.1
|Inspection tools
1. Measuring stand with indicatorwww.bzxz.net
3. V-shaped stand or
or deflection meter
JB/T6756.9-93
Inspection method
1. Place the steering guide wheel set on the V-shaped stand, and make the two ends of the mandrel equal in height relative to the plate 2. Make the contact of the indicator contact with the bottom of the groove of any guide wheel, and then rotate it one circle, the maximum reading difference of the indicator is its radial circular runout 3.Put the indicator's contact in contact with the guide wheel end faces at both ends, and then rotate the guide wheel for one circle. The maximum reading difference of the indicator is the end face circular runout diagram
Test items
Radial circular runout of the traction wheel or traction
tractor surface
Test items
The circular runout of the take-up shaft surface
Should comply with the provisions of
JB/T56053.1
Should comply with the provisions of
JB/T56053.1
Additional instructions:
Testing tool
Testing tool with indicator
Testing tool|| tt||Measurement with indicator
JB/T6756.9-93
Testing method
1. Place the measuring frame at a suitable position on the machine2. The indicator contact contacts the surface of the traction wheel, rotate the traction wheel for one circle, and the maximum reading difference of the indicator is its radial runout
3. Use the same method as above to measure at several positionsTable 4
Testing method
1. Fix the measuring frame at a suitable position on the take-up machine2. The indicator contact contacts the far end of the take-up shaft, rotate the take-up shaft for one circle, and the maximum reading difference of the indicator is its radial runout
This standard is proposed and managed by the Shanghai Cable Research Institute of the Ministry of Machinery Industry. This standard is drafted by the Shanghai Cable Research Institute of the Ministry of Machinery Industry. The main drafters of this standard are Li Guoku, Wang Yuhui, and Jin Tiegang. 50
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