Jiaxing Dexun Co.,Ltd.
| Payment Terms | T/T |
| Supply Ability | 100,000pcs per month |
| Delivery Time | 25-35days |
| Packaging Details | Plastic bag |
| Material | Carbon Steel |
| Finish | Black oxide |
| Color | Black |
| Application | Healthcare |
| Usage | Automobile |
| Grade | 8 |
| Service | OEM/ODM |
| Certificate | ISO9001:2008 |
| Place of Origin | China |
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Product Specification
| Payment Terms | T/T | Supply Ability | 100,000pcs per month |
| Delivery Time | 25-35days | Packaging Details | Plastic bag |
| Material | Carbon Steel | Finish | Black oxide |
| Color | Black | Application | Healthcare |
| Usage | Automobile | Grade | 8 |
| Service | OEM/ODM | Certificate | ISO9001:2008 |
| Place of Origin | China | ||
| High Light | Grade 8 Square Weld Nut ，Steel square weld nut ，Black Oxide welding nut | ||
Steel square weld nut with black oxide.
Description
Surface blackening principle:
In order to improve the anti rust ability of steel parts, the surface of steel parts is oxidized into smooth ferric oxide with strong oxidant. The ferric oxide oxidized at low temperature (about 130 ℃) is dark black.
| Product name | Steel square weld nut with black oxide |
| Material | Caron steel |
| Process | Cold Forging , CNC machining |
| Dimensions | Customize |
| Grade | Class 8 |
| Finish | Black oxide |
| Standard | Nonstandard |
| Usage | Automobile |
| Color | Black |
| Service | OEM/ODM |
| Certificate | ISO9001 |
| Application | Healthcare |
The surface blackening operation process:
Workpiece clamping → degreasing → cleaning → pickling → oxidation → cleaning → saponification → hot water boiling and washing → inspection
(1) Workpiece clamping
According to the shape and size of the workpiece, a special fixture or spreader should be designed. The purpose is to leave enough gaps between the workpieces, the workpieces can not contact each other, so that each workpiece can be completely immersed in the oxidizing liquid to be oxidized.
(2) Degreasing
The purpose is to remove oil stains on the surface of the workpiece.
(3) Pickling
The purpose of pickling is to remove rust on the surface of the workpiece. Because rust will hinder the formation of dense Fe304 layer. Even if the workpiece has no rust, it should be pickled, because it will further remove the oil stains, and the pickling will increase the activation energy of the surface molecules of the workpiece, which can be oxidized in the next process and can generate a thicker Fe304 layer.
Plating Line
Test Equipment
Heat Treatment
1.Q:Are you a factory or a trader?
A:We're factory with more than 20 years' experience.
2.Q:Can we visit your factory?
A:Sure, We welcome you to visit our factory.
3.Q:How to get an accurate quote?
A:Pls send us an inquiry with detailed specifications, if you have a sample or technical drawing, it is much better.
4.Q:What is the payment terms?
A:We prefer 50% advance payment with balance against before shipment. It can be negotiated.
Company Details
Business Type:
Manufacturer,Trading Company
Year Established:
1997
Total Annual:
32 Million-41.5 Million
Employee Number:
300~400
Ecer Certification：
Verified Supplier
About us Jiaxing Dexun Co., Ltd. was established in 1997, origin from Taiwan, we are professional manufacturer and exporter integrated with design, research & development, manufacturing and sales of OEM/ODM stamping parts,deep drawing parts, standard welding fasteners and non-st... About us Jiaxing Dexun Co., Ltd. was established in 1997, origin from Taiwan, we are professional manufacturer and exporter integrated with design, research & development, manufacturing and sales of OEM/ODM stamping parts,deep drawing parts, standard welding fasteners and non-st...
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