Jiaxing Dexun Co.,Ltd. 86-573-82716900 wendyl@dexun-hardware.cn
Healthcare Black Oxide Steel Grade 8 Square Weld Nut

Healthcare Black Oxide Steel Grade 8 Square Weld Nut

  • High Light

    Grade 8 Square Weld Nut

    ,

    Steel square weld nut

    ,

    Black Oxide welding nut

  • Material
    Carbon Steel
  • Finish
    Black Oxide
  • Color
    Black
  • Application
    Healthcare
  • Usage
    Automobile
  • Grade
    8
  • Service
    OEM/ODM
  • Certificate
    ISO9001:2008
  • Place of Origin
    China
  • Minimum Order Quantity
    3000pcs
  • Price
    USD
  • Packaging Details
    Plastic bag
  • Delivery Time
    25-35days
  • Payment Terms
    T/T
  • Supply Ability
    100,000pcs per month

Healthcare Black Oxide Steel Grade 8 Square Weld 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

 

 

Healthcare Black Oxide Steel Grade 8 Square Weld Nut 0

 

Test Equipment

 

Healthcare Black Oxide Steel Grade 8 Square Weld Nut 1

 

Heat Treatment

 

Healthcare Black Oxide Steel Grade 8 Square Weld Nut 2

 

Healthcare Black Oxide Steel Grade 8 Square Weld Nut 3

 

 

 

 

 

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.