Matting Agent For Elastic Coatings 7631-86-9 Silica Matting Agent, Precipitated Silica For Elastic Coating, 7631-86-9 Chemicals Powder For Elastic Paint Guangzhou Quanxu Technology Co Ltd , https://www.anticorrosionpigment.com
The structure of multi-stage centrifugal pumps is relatively complex, with many wearing parts and high precision requirements. To prevent malfunctions and cause undue losses, they should be carefully inspected before commissioning. The test run must be fully prepared, strictly abide by the operating procedures, and the operator should conduct the test run. Once the test run fails, it should be immediately removed. In the same way, failures of multi-stage centrifugal pumps during operation should also be eliminated in time. After the test vehicle is qualified and operating normally, the transfer formalities can be processed and put into production.
1, before the test and preparation of a test, inspection and maintenance records. The quality of inspection and repair shall meet the requirements of inspection and repair procedures, and the maintenance records shall be complete and accurate.
b. Check the lubrication condition. If it does not meet the requirements, replace it or add it in time.
c. The cooling water system should be unobstructed.
d. There is no sense of uneven weight, no noise, and the packing gland is not skewed.
e. Before the hot oil pump starts, it must warm the pump. The preheating temperature is not higher than 50°C per hour.
2. After the empty load test is completed and inspected, the multi-stage centrifugal pump can be tested for empty load. The empty load test should follow the following steps.
a. Check the motor and insulation by an electrician and send it after passing the inspection.
b. Open the cooling water and start the car.
c, start the motor, pay attention to observe the motor steering and sound is normal.
3, empty load test should meet the following requirements.
a, smooth operation, no noise, oil seal, cooling water and lubrication system work properly, no leakage of the subsidiary pipe.
b. The temperature rise of the sliding bearing should be lower than 65°C, and the temperature rise of the rolling bearing should be lower than 70°C.
c. The vibration is normal and the amplitude does not exceed the specifications required by the technical requirements.
4. The load test is completed and the empty load test is completed. The performance indicators of the pump meet the technical requirements and the load test can be performed.
The load test procedure is as follows.
a. Start the car and open the cooling water.
b, irrigation pump.
c, start the motor. Observe the pump outlet pressure, motor current, and operation.
d. Slowly open the pump outlet valve until normal flow.
e. Adjust the flow and pressure with a regulating valve or pump outlet valve.
The load test should meet the following requirements.
a. Smooth operation without noise, and the lubrication and cooling system is working properly.
b. The flow rate and pressure are stable, reaching the nameplate capacity or checking ability.
c. Under the rated head and flow, the motor current does not exceed the rated value.
d, the normal temperature of all parts.
e. Bearing vibration amplitude: The working speed is below 1500r/min, which should be less than 0.09mm; the working speed is below 3000r/min and should be less than 0.06mm.
f. There is no leakage at each joint and subsidiary pipeline.
g, shaft seal leakage loss should not exceed the following criteria, packing seal: general liquid, 20 drops / min; heavy oil, 10 drops / min; mechanical seal: general liquid, 10 drops / min; heavy oil, 5 drops / min.
5, acceptance and maintenance of quality in line with regulatory requirements, accurate and complete maintenance records, test is normal, according to the provisions of acceptance procedures, transfer of production. Our matting agents' main material is silica dioxide, a natural material that can be found in quartz or sand.
We change the original silica dioxide's chemical parameters to make it turn into different types silica
Matting Agent that are suitable to use in different using areas.
Soft-touch coatings provide a unique feel, or haptic effect, to surfaces with natural characteristics that tend to be
unappealing to most consumers, particularly plastics. They are widely used in interior automotive and consumer electronic applications, where manufacturers seek to provide a premium look and feel to differentiate their products from the competition.
Paint Silica Matting Agent is a very fine-grained precipitated silica as white powder.
We provide various types of silica matting agent that are used in wood coatings, inks, industrial coatings, coil coatings, plastic coatings, UV curing coatings, leather coatings, E-coats ,matte paper coatings and powder coatings.
We focus on the matting agent about 25 years, knowing exactly the customer`s requirement, and have most experience to offer service and technical solution to the customers. We have strict control of the quality; the physical index and performance are strictly tested before delivery. Will ensure that stable products of different batch. Compare to International and the other Chinese Supplier, our products has better performance, stable quality and cost efficient.
Multi-stage centrifugal pump test and troubleshooting: