Wheel bolt electroplating process

An electroplating process and bolt technology, which is applied in the field of wheel bolt electroplating process, can solve the problems such as the risk of hydrogen embrittlement, and achieve the effects of reducing the risk of hydrogen embrittlement, improving product quality, and reducing production costs

Inactive Publication Date: 2020-04-28
山东九佳紧固件股份有限公司
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Problems solved by technology

The anticorrosion of the surface of wheel bolts is inseparable from the electroplating process, and the pickling process in electroplating is mainly used to remove oxide skin and oil stains on the surface of parts, which is one of the keys to determine the quality of the coating, but the pickling process will produce hydrogen permeation. risk of hydrogen embrittlement

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  • Wheel bolt electroplating process

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Embodiment Construction

[0022] In order to clearly illustrate the technical features of the solution, the solution will be described below through specific implementation modes.

[0023] Such as figure 1 As shown, a kind of wheel bolt electroplating process of the present invention comprises the process steps that are carried out in the following order:

[0024] For shot blasting, put the processed and formed bolts into the shot blasting chamber, and the weight of each loading should not exceed 120kg. Too much loading at a time will lead to incomplete removal of the shot blasting scale; the diameter of the steel shot in the shot blasting chamber is 0.1~ 0.2mm, the hardness of the steel shot is 45~50HRC, and the shot blasting time is 5~8min; in the shot blasting process, when the shot blasted bolts are taken out of the shot blasting chamber, the vibration blanking method can be used, and a slope can be set at the blanking port. A vibration motor is installed on the slope. When the vibration motor vib...

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Abstract

The invention relates to a wheel bolt electroplating process. The process comprises the following process steps of thermal debinding, primary water washing, pre-plating, secondary water washing, electroplating, third water washing, glaring, fourth water washing, passivation, fifth water washing, hot water washing and drying. An electroplated product obtained after shot blasting has the same surface quality and salt fog testing as an electroplated product after acid pickling, a shot blasting product does not need acid pickling, the hydrogen embrittlement risk is reduced, shot blasting does notonly replaces one acid pickling procedure, neutralization and hydrogen removal after acid pickling are not needed, in addition, the production cost can be consumed by waste acid treatment caused by acid pickling, shot blasting is free of the problem, the product quality is improved through process improvement, and in addition, the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of bolt processing, in particular to the field of bolt electroplating, in particular to a wheel bolt electroplating process. Background technique [0002] Wheel bolts are high-strength bolts used to connect the wheels of vehicles. Generally, they are grade 10.9 for small cars and grade 12.9 for medium and large vehicles. Wheel bolts are the key components connecting the wheels. Once they fail, serious consequences will be caused. Therefore, strict checks must be carried out during the production of bolts. The anticorrosion of the surface of wheel bolts is inseparable from the electroplating process, and the pickling process in electroplating is mainly used to remove oxide skin and oil stains on the surface of parts, which is one of the keys to determine the quality of the coating, but the pickling process will produce hydrogen permeation. There is a risk of hydrogen embrittlement. In order to reduce the ri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D7/00C25D5/36C25D5/10C25D5/48C25D3/22C23C22/06
CPCC23C22/06C25D3/22C25D5/10C25D5/36C25D5/48C25D7/003
Inventor 徐铁成李红梅陈辰
Owner 山东九佳紧固件股份有限公司
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