七芒星小说免费阅读全文,又才又大又黑好爽,不要啊快满了鉴黄师,国模无码视频一区,亚洲日韩国产天堂在线,泡泡浴樱花动漫,交换我的朋友的麦子300字视频在线,欧美日韩高清免费不卡,我想看b站,猴哥痞幼事件,播播影院私人影院1

1. Production site and testing, vigorous production site and orderly processing site

2. In order to ensure the levelness and straightness of the equipment, all the equipment of our company is made on the steel reference platform, which can guarantee the levelness and straightness of the whole production line ±0.2mm and ±0.2mm respectively

C. Integral test method -- put the blocked muff into the pool as a whole and pressurize it to 0.3mpa. Test the leakage as a whole and hold the pressure for 0.5 hours to prevent possible leakage in other positions except welding seam

3. Rigorous detection methods

For the whole system, the air tightness leak inspection of muffle must be strictly carried out at the manufacturing site before delivery. The leak detection method used is one or more of the following combination of simultaneous use, or even all use, until the customer approves the result.

Bubble detection method → color penetration method → whole test method → helium leak test method



A. Bubble detection method -- inject compressed air into the sealed muffin, brush glass water at the welding seam for observation and pressure maintenance;

B. Dye penetration method -- clean the weld as the inspection side, coat it with whitewash powder, and coat the back side of the weld with kerosene with high permeability after being dried, so that the surface is sufficiently infiltrated and penetrates for half an hour, depending on whether the place coated with whitewash powder has any oil stains. No oil stain is qualified, when there is oil stain should be further identified infiltration channels and treatment.

D. Helium leak detection method -- helium gas with a concentration of over 10% is injected into the sealed muffin and detected by Agilent (phd-4) helium leak detector