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Galvanized method of bearing

A bearing and hot-dip galvanizing technology, which is applied in the hot-dip galvanizing process, coating, metal material coating process, etc., can solve the problems of easy rusting of bearing materials, poor working conditions, and affecting the service life of bearings in normal use of sliding doors.

Inactive Publication Date: 2010-01-27
无锡市堰微精密轴承厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the central box car is often driven in the field, this kind of bearing has been exposed outside, and the working condition is relatively poor. The commonly used bearing materials are easy to rust, which affects the normal use of the sliding door and the service life of the bearing.

Method used

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Embodiment Construction

[0013] The processing process of the present invention is as follows: workpiece→degreasing→water washing→pickling→water washing→soaking in plating aid solvent→drying and preheating→hot galvanizing→dehydrogenation.

[0014] The relevant technological process is described below.

[0015] (1) Degreasing

[0016] Chemical degreasing or water-based metal cleaning agent can be used to degrease until the workpiece is completely soaked in water. The chemical degreaser used for the chemical degreasing can use NaOH solution or sodium carbonate solution. The water-based metal cleaning agent can be RT-805 water-based metal cleaning agent produced by Tianjin Intel Energy Saving Technology Co., Ltd.

[0017] (2) pickling

[0018] H can be used 2 SO 4 15%, thiourea 0.1%, the rest is water, 40-60°C or pickling with HCl 20%, hexamethylenetetramine 1-3g / L, 20-40°C. Adding pickling corrosion inhibitor can prevent the matrix from over-corroding and reduce the hydrogen absorption of the iro...

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PUM

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Abstract

The invention relates to a production method of a bearing, in particular to a galvanized method of the bearing. In accordance with the technical scheme provided by the invention, the method comprises the following steps: (1) degreasing: using chemical degreaser or water-based metal cleaning agent to remove oil contamination on the surface of workpiece; (2) pickling: carrying out pickling on degreased workpiece in pickling solution; (3) dipping plating assistant agent: placing the workpiece after pickling into plating assistant agent to strengthen the binding force of a plating layer and a substrate; (4) drying and preheating: in order to prevent the workpiece from deforming due to sharp temperature rising when hot galvanizing in the next step is carried out on the workpiece, remove residual moisture and prevent detonation of zinc from causing burst zinc liquid, preheating the workpiece in the oven; (5) hot galvanizing: placing the workpiece after drying and preheating into the zinc liquid to galvanize; and (6) dehydrogenating: placing the workpiece after hot galvanizing into an oven of 190 to 210 DEG C to keep warm for 3.5 to 4.5h to remove hydrogen in the workpiece, thereby preventing the workpiece from brittlely fracturing. The invention can prevent the bearing from rusting and prolong the service life of the bearing.

Description

technical field [0001] The invention relates to a production method of a bearing, in particular to a galvanizing method for a bearing. Background technique [0002] The rear sliding door of the concentrated box car is a kind of sliding door, and a bearing needs to be installed on this sliding door. When in use, the sliding door utilizes the bearing at its lower part to slide on the slide rail installed on the door frame. Because the centralized box car often drives in the field, this kind of bearing has been exposed outside, and the working condition is relatively poor. The commonly used bearing materials are easy to rust, which affects the normal use of the sliding door and the service life of the bearing. Contents of the invention [0003] The purpose of the present invention is to design a galvanizing method for bearings to avoid rusting of the bearings and prolong the service life of the bearings. [0004] According to the technical scheme provided by the present inve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/06C23C2/02C23C2/26
Inventor 秦伟
Owner 无锡市堰微精密轴承厂
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