日日av网,九九九九老司机,av男人天堂一区,国产制服日韩欧美,色婷婷二区,色999综合,在线视频不卡视频,国产日韩欧美精品一区,色婷婷一区二区三区四

News

Introduction of screw maintenance issues by screw manufacturers

2023-04-12(2097)Views

  Introduction of screw maintenance issues by screw manufacturers1、 Dongguan Screw Factory needs to be very careful when rinsing screws because this process is very important, as there will be residue l...

Introduction of screw maintenance issues by screw manufacturers

1、 Dongguan Screw Factory needs to be very careful when rinsing screws because this process is very important, as there will be residue left on the surface of the screws during this process. Rinse this step after cleaning with a silicate cleaning agent.

2、 During the tempering and heating process of screws, they should be stacked properly, otherwise slight oxidation may occur in the quenching oil.

3、 There will be white residue of phosphide on the surface of high-strength screws, indicating that (the first point) the inspection was not careful enough during operation.

4、 If Dongguan Screw Factory finds that there is blackening on the surface of the parts, resulting in chemical reactions, it indicates that the heat treatment work is not thorough and the alkaline residue on the surface has not been completely removed.

5、 Standard parts of components may rust during rinsing, and the water used for rinsing should also be frequently replaced.

6、 Dongguan Screw Factory introduced that excessive corrosion phenomenon indicates that the quenching oil has been used for too long and needs to be added with new oil or replaced.


Latest article promotion

Recommended high-quality articles



	






疏勒县|
承德市|
高台县|
炉霍县|
龙门县|
通渭县|
海原县|
会同县|
遵化市|
内黄县|
墨竹工卡县|
伊春市|
渝北区|
肃宁县|
福建省|
遵义市|
英吉沙县|
肇源县|
文昌市|
定边县|
古交市|
宁国市|
防城港市|
宝坻区|
汾西县|
明光市|
新建县|
新余市|
新昌县|
内黄县|
磐安县|
时尚|
鹤壁市|
沧州市|
睢宁县|
蒲江县|
丹凤县|
淮北市|
天长市|
英超|
台北市|