Wear-resistant shaft sleeve coating and preparation method thereof

A technology of coating and shaft sleeve, which is applied in the direction of coating, metal material coating process, etc., can solve the problems of easy peeling of shaft sleeve coating, short service life, and limitation of on-site production efficiency, so as to solve the problem of easy peeling and reduce production The effect of cost and mechanical performance improvement

Pending Publication Date: 2022-07-19
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of the above-mentioned defects existing in the prior art, the purpose of the present invention is to provide a wear-resistant shaft sleeve coating and its preparation method. By designing the comprehensive ratio of the coating components of the shaft sleeve, laser cladding process and heat treatment process, the shaft The comprehensive improvement of the mechanical properties of the sleeve coating effectively prolongs the service life of the shaft sleeve, which solves the problems of easy peeling of the shaft sleeve coating, short service life of a single machine, and limitation of on-site production efficiency; in order to improve production efficiency and reduce production costs, lay a solid foundation

Method used

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  • Wear-resistant shaft sleeve coating and preparation method thereof
  • Wear-resistant shaft sleeve coating and preparation method thereof
  • Wear-resistant shaft sleeve coating and preparation method thereof

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preparation example Construction

[0055] The above-mentioned preparation method of the wear-resistant shaft sleeve coating is as follows: the coating raw materials are configured according to the chemical composition of the wear-resistant shaft sleeve coating, and then the reverse synchronous powder feeding method is used to carry out laser cladding, and laser cladding is formed on the surface of the shaft sleeve. layer, and then annealing heat treatment to obtain the wear-resistant bushing coating; the specific steps of the preparation method of the wear-resistant bushing coating are as follows:

[0056] (1) Coating raw materials: use nano-powder to configure according to the chemical composition of the above-mentioned wear-resistant bushing coating, wherein the particle size of the nano-powder is 50-100 nm;

[0057] (2) Laser cladding: send the bushing into the 2 The processing equipment composed of laser, processing machine tool and numerical control equipment uses the reverse synchronous powder feeding met...

Embodiment 1

[0066] (1) Coating raw materials: Nano powder is used to configure according to the chemical composition of the wear-resistant bushing coating, wherein the particle size of the nano powder is 50-100 nm;

[0067] (2) Laser cladding: send the bushing into the 2 The processing equipment composed of laser, processing machine tool and numerical control equipment, the coating material is laser cladding by reverse synchronous powder feeding method. Under the action of the laser, the coating material is clad on the surface of the sleeve to form a 1mm laser cladding layer ; Before laser cladding, preheat the bushing to 200℃, then adjust the power of the laser to 3KW, the laser scanning speed is 200mm / min, the diameter of the laser spot is 5mm, the defocusing distance is 6mm, and the powder feeding rate is 10g / min. min, the overlap ratio is 40%, and the G / R control is 1.3.

[0068] (3) Annealing heat treatment: First, the shaft sleeve after laser cladding is sent to the heating furnace...

Embodiment 2

[0070] (1) Coating raw materials: Nano powder is used to configure according to the chemical composition of the wear-resistant bushing coating, wherein the particle size of the nano powder is 50-100 nm;

[0071] (2) Laser cladding: send the bushing into the 2 The processing equipment composed of laser, processing machine tool and numerical control equipment, the coating raw material is laser cladding by means of reverse synchronous powder feeding. Before laser cladding, preheat the bushing to 250℃, then adjust the power of the laser to 1.6KW, the laser scanning speed is 120mm / min, the diameter of the laser spot is 3mm, the defocusing distance is 4mm, and the powder feeding rate is 4mm. 8g / min, lap rate 30%, G / R control is 1.5.

[0072] (3) Annealing heat treatment: First, the shaft sleeve after laser cladding is sent to the heating furnace, heated to 200±10°C at a heating rate of 210°C / h, and kept for 10 minutes; then continue to heat up at 200°C / h After heating at a rate of...

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Abstract

The invention discloses a wear-resistant shaft sleeve coating and a preparation method thereof. The wear-resistant shaft sleeve coating comprises the following chemical components in percentage by weight: 0.1-0.5% of C, 10-17% of Ni, 8-12% of Cr, 3-6% of Mo, 0.1-4.5% of TiN and the balance of WC and inevitable impurities. The coating raw materials are proportioned according to the components, then laser cladding is carried out in a reverse synchronous powder feeding mode, a laser cladding layer is formed on the surface of a shaft sleeve, and the wear-resistant shaft sleeve coating is obtained after annealing heat treatment. By designing the comprehensive proportion of the components of the shaft sleeve coating, the laser cladding process and the heat treatment process, the mechanical property of the shaft sleeve coating is comprehensively improved, the service life of the shaft sleeve is effectively prolonged, and the problems that the shaft sleeve coating is prone to stripping, the service life of the shaft sleeve on a machine is short, and the field production efficiency is limited are solved; and a solid foundation is laid for improving the production efficiency and reducing the production cost.

Description

technical field [0001] The invention belongs to the shaft sleeve coating technology in the field of metal surface treatment, in particular to a wear-resistant shaft sleeve coating and a preparation method thereof, more particularly, to a shaft sleeve coating for a zinc pot sunken roll system and the same Preparation. Background technique [0002] In the zinc pot of the hot-dip galvanizing unit, the sunken roll, the stabilizing roll and the correction roll, as well as the roll frame supporting the three rolls, are usually called the "three rolls and six arms" of the zinc pot. The function on the production line is to guide the strip into the zinc pot. , and complete the galvanizing process; the current hot-dip galvanizing units include GI, GA, GL, etc., and the zinc pot hardware in the hot-dip galvanizing unit has a great impact on production, such as the quality of the roller surface, the operation of the "three-roller and six-arm" Stability and positional accuracy all dire...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C22C29/02
CPCC23C24/103C22C29/02C22C29/005
Inventor 瞿海霞唐成龙侯晓光张群亮姚舜韩建增
Owner BAOSHAN IRON & STEEL CO LTD
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