A kind of alloy steel surface coating cladding method

A surface coating, alloy steel technology, applied in metal material coating process, coating, melt spraying and other directions, can solve the problem of insufficient bonding strength between coating and substrate, complex coating cladding process, serious coating dilution, etc. problem, to achieve the effect of easy selection of temperature range, high utilization rate of heat energy, and simple method

Active Publication Date: 2018-05-11
CHENGDU PLASMAJET SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention solves the problems of cracks or pores in the cladding layer, insufficient bonding strength between the coating and the substrate, distortion of the coating shape and serious coating dilution in the prior art, and solves the problems of complex coating cladding process and harsh conditions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method for cladding an alloy steel surface coating includes the following steps:

[0033] A. Configure alloy powder

[0034] Alloy powder, including the following raw materials by mass percentage: 30% ferro-titanium, 14% ferrochromium, 14% ferro-molybdenum, 20% graphite and powder with the balance of pure iron, mixed together in proportion;

[0035] B. Laminar plasma coating cladding equipment

[0036] The coating cladding equipment includes a laminar flow plasma generator, which provides a heat source with laminar flow plasma. Setting parameters, input power supply voltage 340, rated input capacity 30KVA, output voltage 60V, working voltage 25V, output current 450A, scanning speed 600mm / min, powder feeder airflow 1.5m 3 / h, ion gas flow rate 1.5m 3 / h, shielding gas flow rate 1.5 m 3 / h;

[0037] C. Pretreatment of coating cladding

[0038] Derusting, decontamination and fatigue removal of the surface of the substrate, and preheating the laminar flow plasma generator;

[0039]...

Embodiment 2

[0044] A method for cladding an alloy steel surface coating includes the following steps:

[0045] A. Configure alloy powder

[0046] Alloy powder, including the following raw materials by mass percentage: 35% ferro-titanium, 16% ferrochrome, 16% ferro-molybdenum, 25% graphite and powder with the balance pure iron, mixed together in proportion;

[0047] B. Laminar plasma coating cladding equipment

[0048] The coating cladding equipment includes a laminar flow plasma generator, which provides a heat source with laminar flow plasma. Setting parameters, input power supply voltage 400, rated input capacity 30KVA, output voltage 60V, working voltage 25V, output current 500A, scanning speed 650mm / min, powder feeder airflow 2.0m 3 / h, ion gas flow rate 2.0 m 3 / h, protective gas flow rate 2.3 m 3 / h;

[0049] C. Pretreatment of coating cladding

[0050] Derusting, decontamination and fatigue removal of the surface of the substrate, and preheating the laminar flow plasma generator;

[0051] D....

Embodiment 3

[0056] A method for cladding an alloy steel surface coating includes the following steps:

[0057] A. Configure alloy powder

[0058] Alloy powder, including the following raw materials by mass percentage: 33% ferro-titanium, 15% ferrochrome, 15% ferro-molybdenum, 22% graphite and powder with the balance of pure iron, mixed together in proportion;

[0059] B. Laminar plasma coating cladding equipment

[0060] The coating cladding equipment includes a laminar flow plasma generator, which provides a heat source with laminar flow plasma. Setting parameters, input power supply voltage 370, rated input capacity 30KVA, output voltage 60V, working voltage 25V, output current 470A, scanning speed 620mm / min, powder feeder airflow 1.8m 3 / h, ion gas flow rate 1.8 m 3 / h, shielding gas flow rate 2.1 m 3 / h;

[0061] C. Pretreatment of coating cladding

[0062] Derusting, decontamination and fatigue removal of the surface of the substrate, and preheating the laminar flow plasma generator;

[0063] ...

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Abstract

The invention discloses an alloy steel surface coating cladding method. A surface coating comprises, by mass, 30 to 35% of ferrotitanium, 14 to 16% of ferrochromium, 14 to 16% of ferromolybdenum, 20 to 25% of graphite, and the balance pure iron powder. According to the alloy steel surface coating cladding method, alloy steel surface coating cladding is realized via following steps: alloy powder configuration is carried out, laminar plasma jet coating cladding equipment setting is carried out, coating cladding pretreatment is carried out, coating cladding treatment is carried out, coating cladding aftertreatment is carried out, and a heat source is provided by a laminar plasma generator under certain parameter setting. According to the alloy steel surface coating cladding method, the special heat source is provided by laminar plasma beam, and special setting of technological conditions and parameters are carried out, so that the alloy steel surface coating cladding method is simple, an obtained alloy steel surface cladding coating possesses wear resistance, high compactness, and alloy steel surface modification quality is improved.

Description

Technical field [0001] The invention relates to a metal surface treatment method, in particular to an alloy steel surface coating cladding method, and belongs to the technical field of metal surface treatment. Background technique [0002] In the present and foreseeable future, alloy steel is still an important material needed for social and economic development. New alloy steel must meet the requirements of social development for energy conservation, resource conservation and environmental protection in the production, processing, use and recycling of steel. For this reason, alloy steel will develop in the direction of high performance and multiple varieties. In addition to iron and carbon, other alloying elements are added to alloy steel. An iron-carbon alloy formed by adding an appropriate amount of one or more alloying elements on the basis of ordinary carbon steel. According to the different added elements, and adopting appropriate processing technology, special properties...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/134C23C4/06
CPCC23C4/06
Inventor 李向阳陈千智何泽李露
Owner CHENGDU PLASMAJET SCI & TECH
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