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(2098)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



	






嘉兴市|
建德市|
沁水县|
乌兰浩特市|
达孜县|
沅陵县|
铁力市|
拉孜县|
信阳市|
镶黄旗|
永平县|
灵璧县|
墨玉县|
全南县|
民勤县|
怀宁县|
香格里拉县|
奉新县|
洛隆县|
靖江市|
夹江县|
无极县|
偃师市|
普兰县|
临漳县|
濉溪县|
开平市|
绥德县|
家居|
宁德市|
镇康县|
澎湖县|
大庆市|
邓州市|
巴青县|
麻阳|
辽阳县|
铜鼓县|
十堰市|
东兰县|
甘洛县|