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Surface treatment process of valve metal part

A technology for surface treatment and metal parts, applied in the field of surface treatment technology of metal parts of valves, can solve the problems of unclear production classification, affecting production progress, uneven quality levels, etc., achieve high-efficiency quality inspection, improve product production quality, Improve the effect of high-efficiency work

Inactive Publication Date: 2019-10-11
奇大悉阀门制造(盐城)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a surface treatment process for valve metal parts, which has the advantages of grading operation and high-quality production, and solves the problem of uneven quality levels caused by unclear production grading in the past, thereby affecting the production progress.

Method used

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  • Surface treatment process of valve metal part

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Effect test

Embodiment 1

[0031] see figure 1 , the present invention provides a technical solution for the surface treatment process of valve metal parts: a surface treatment process for valve metal parts, characterized in that it includes the following steps:

[0032] S1: Polishing and grinding: clamp the cast valve metal parts in the equipment to be polished for the next polishing and grinding.

[0033] S2: The polished and polished valve parts are inspected by quality inspectors for their appearance, specifications and dimensions. After passing the inspection, proceed to the next step, and return to the previous process for reprocessing if they are unqualified.

[0034] S3: Carry out heat treatment on qualified valve parts after polishing and grinding. Here, quenching and tempering heat treatment is adopted, and the rigidity and toughness of valve parts are improved through quenching and high temperature tempering. After heat treatment, quality inspectors conduct heat treatment qualified inspection...

Embodiment 2

[0050] see figure 1 , the present invention provides a technical solution for the surface treatment process of valve metal parts: a surface treatment process for valve metal parts, characterized in that it includes the following steps:

[0051] S1: Polishing and grinding: clamp the cast valve metal parts in the equipment to be polished for the next polishing and grinding.

[0052] S2: The polished and polished valve parts are inspected by quality inspectors for their appearance, specifications and dimensions. After passing the inspection, proceed to the next step, and return to the previous process for reprocessing if they are unqualified.

[0053] S3: Carry out heat treatment on qualified valve parts after polishing and grinding. Here, quenching and tempering heat treatment is adopted, and the rigidity and toughness of valve parts are improved through quenching and high temperature tempering. After heat treatment, quality inspectors conduct heat treatment qualified inspection...

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Abstract

The invention discloses a surface treatment process of a valve metal part. The surface treatment process of the valve metal part comprises the following steps of placing a valve part in a derusting tank for 10-30 minutes by a mechanical arm until the rust is completely removed; the valve part is placed in a third normal-temperature clear water tank to be cleaned for the first time, and the cleaning time is 20-30 seconds; after rough cleaning is carried out for one time, the valve part is placed in a fourth normal-temperature clear water tank for secondary cleaning through the mechanical arm, and the cleaning time is 20-30 seconds, so that hydrochloric acid on the surface of the valve part can be cleaned up; the valve part is placed in an electroplating tank through the mechanical arm, andthe concentration of the solution in the electroplating tank is 100-120 g / l of NACH, 10-12 g / l of Zno, 5-7 g / l of 94; the current density is 2.5-3 A / dm2, the temperature is 5 -35 DEG c, the electroplating thickness is determined according to the production requirements, and the electroplating time is determined according to the electroplating thickness. According to the surface treatment process,grading operation can be carried out, each step is fine in place, a special detection program is matched, and the purposes of high-efficiency and high-quality production can be realized.

Description

technical field [0001] The invention relates to the technical field of valve processing, in particular to a surface treatment process for valve metal parts. Background technique [0002] Electroplating is the process of plating a thin layer of other metals or alloys on the surface of certain metals using the principle of electrolysis. It is a process of using electrolysis to attach a layer of metal film to the surface of metal or other material parts to prevent metal oxidation ( Such as rust), improve wear resistance, conductivity, reflectivity, corrosion resistance (copper sulfate, etc.) The cations are reduced to form a coating on the surface of the workpiece to be plated. In order to eliminate the interference of other cations and make the coating uniform and firm, it is necessary to use a solution containing metal cations as the electroplating solution to keep the concentration of the metal cations in the coating constant. The purpose of electroplating is to coat the me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/22C25D5/34C25D5/48C25D5/52
CPCC25D3/22C25D5/34C25D5/48C25D5/52
Inventor 万鹏程
Owner 奇大悉阀门制造(盐城)有限公司
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