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Phosphor-washing device for high-strength bolt and technology

A high-strength bolt and cleaning device technology, applied in the field of high-strength bolt phosphorus washing device, can solve the problems of incomplete removal of phosphating film, low production efficiency, high concentration, etc., and achieve long service life of potion, sufficient cleaning time and high production efficiency high effect

Active Publication Date: 2014-07-23
ZHEJIANG JINJI AUTO PARTS
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0002] The existing phosphorus washing line has short cleaning time, high concentration, short potion service life and low production efficiency
The phosphating film on the surface of the product cannot be completely removed, and δ iron is easily produced during the heat treatment process, which affects the mechanical properties of the product
In the subsequent electroplating or use process, H2 can easily enter the interior of the steel part through δ iron, making the product prone to hydrogen embrittlement

Method used

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  • Phosphor-washing device for high-strength bolt and technology

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] As shown in the figure, the high-strength bolt phosphorus washing device of the present invention includes a first front cleaning device, a second front cleaning device, a first phosphorus removal tank, a second phosphorus removal tank, a cold water tank and an oil immersion tank; The cleaning device, the second front cleaning device, the first phosphorus removal tank, the second phosphorus removal tank, the cold water tank and the oil immersion tank are connected in sequence; the first front cleaning device, the second front cleaning device, the first phosphorus removal tank, the second The phosphorus removal tanks are equipped with injection pipes and heaters.

[0017] The first front cleaning device includes: a first heater 1, a first conveyor belt 4, a first speed reducer 3, a first spray pipe group 2, a first high-pressure circulati...

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Abstract

The invention discloses a phosphor-washing device for a high-strength bolt. The phosphor-washing device comprises a first front washing device, a second front washing device, a first phosphor-removing tank, a second phosphor-removing tank, a cold water tank and an oil-soaking tank. A phosphor-washing technology for the phosphor-washing device for the high-strength bolt comprises the following steps: washing a bolt by using the first front washing device and then placing the bolt into the second front washing device for cleaning; placing the bolt into the first phosphor-removing tank for removing the phosphor; placing the bolt into the second phosphor-removing tank for removing the phosphor; placing into the cold water tank for cleaning; and then placing into the oil-soaking tank for soaking oil and preventing rust, thereby obtaining an end product. According to the phosphor-washing technology, the cleaning time is sufficient, the concentration is low, the use period of liquid medicine is long, the production efficiency is high, and meanwhile, the mechanical property is prevented from being influenced by the incomplete phosphor-washing effect.

Description

technical field [0001] The invention relates to a high-strength bolt phosphorus washing device and process. Background technique [0002] The existing phosphorus washing line has short cleaning time, high concentration, short potion service life and low production efficiency. The phosphating film on the surface of the product cannot be completely removed, and δ iron is easily produced during the heat treatment process, which affects the mechanical properties of the product. In the subsequent electroplating or use process, H2 can easily enter the interior of steel parts through δ iron, making the product prone to hydrogen embrittlement. Contents of the invention [0003] The purpose of the present invention is to provide a new process for washing phosphorus of high-strength bolts. [0004] What the present invention is to solve is that when the product is quenched at a temperature range of 800-900°C without dephosphorization before heat treatment, a very thi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G3/00
Inventor 张加林刘志鹏
Owner ZHEJIANG JINJI AUTO PARTS
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