Dual-alloy cladding layer wear plate and preparation method

A spectacle plate and double alloy technology, which is applied in metal material coating process, coating, mechanical equipment, etc., can solve the problems of not meeting actual needs, thermal shock, high material cost, etc.

Inactive Publication Date: 2012-06-27
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Based on the above failure factors, the usage of spectacle panels is only 30,000m 3 left and right, far from meeting actual needs
[0004] Chinese patent 03114161.7 uses casting to complete the combination of the spectacle plate matrix and the hard alloy, but the hard alloy has a significant thermal shock during the casting process
Chinese patent 201010186989.1 uses nickel-coated diamond or cubic boron nitride composite coating to prepare spectacle plates and cutting rings, but the material cost is high
[0005] The above traditional conventional methods are still unsatisfactory, and the service life of the spectacle plate needs to be further improved

Method used

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  • Dual-alloy cladding layer wear plate and preparation method
  • Dual-alloy cladding layer wear plate and preparation method
  • Dual-alloy cladding layer wear plate and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0022] (1) Select 35 steel as the base material of the spectacle plate, and obtain a spectacle plate substrate with high precision (spectacle plate outer contour and two hole cutting) by laser cutting according to the drawing, and the thickness of the substrate is 30mm;

[0023] (2) Carry out mechanical processing on the spectacle plate substrate, reserve a subsequent cladding thickness of 3.0mm on the inner surface of the two holes of the spectacle plate, and process the spectacle plate mounting holes.

[0024] (3) Laser cladding equipment adopts Trumpf 6000 watt CO2 laser (wavelength 10.6um), coaxial cladding head, double-barrel powder feeder, one of which is filled with iron-based alloy powder, and the other is filled with nickel-tungsten carbide powder . The chemical composition of the iron-based alloy used is C: 0.70wt%, B: 3.0wt%, Cr: 24wt%, Ni: 7wt%, Si: 3.0wt%, and the balance is Fe. The chemical composition of the nickel-tungsten alloy used is C: 2.7wt%, Cr: 13wt%, S...

Embodiment 2

[0033] (1) Select 45 steel as the base material of the spectacle plate, and obtain a spectacle plate base with high precision (outer profile of the spectacle plate and two holes cut) by laser cutting according to the drawing, and the thickness of the base is 30mm;

[0034] (2) Carry out mechanical processing on the spectacle plate substrate, reserve a subsequent cladding thickness of 3.0mm on the inner surface of the two holes of the spectacle plate, and process the spectacle plate mounting holes.

[0035] (3) Laser cladding equipment adopts 4000 watts of optical fiber output semiconductor laser (wavelength 1070nm), coaxial cladding head, double-barrel powder feeder, one of which is filled with iron-based alloy powder, and the other is filled with nickel-tungsten carbide powder. The chemical composition of the iron-based alloy used is C: 0.55wt%, B: 2.5wt%, Cr: 22wt%, Ni: 5.5%, Si: 2.4wt%, and the balance Fe. The chemical composition of the nickel-tungsten alloy used is C: 2....

Embodiment 3

[0044] (1) Select 45 steel as the base material of the spectacle plate, and obtain a spectacle plate base with high precision (outer profile of the spectacle plate and two holes cut) by laser cutting according to the drawing, and the thickness of the base is 30mm;

[0045] (2) Carry out mechanical processing on the spectacle plate substrate, reserve a subsequent cladding thickness of 3.0mm on the inner surface of the two holes of the spectacle plate, and process the spectacle plate mounting holes.

[0046] (3) Laser cladding equipment adopts a semiconductor laser (wavelength 808-975nm) with 3000 watts of optical fiber output, a coaxial cladding head, and a double-barrel powder feeder, one of which is filled with iron-based alloy powder, and the other is filled with nickel-tungsten hard quality alloy powder. The chemical composition of the iron-based alloy used is C: 0.40wt%, B: 2.0wt%, Cr: 20wt%, Ni: 4%, Si: 1.8wt%, and the balance is Fe. The chemical composition of the nicke...

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Abstract

A dual-alloy cladding layer wear plate and a preparation method relate to the field of wear plate of a concrete pumper. Bores of a wear plate matrix and inner rings of glasses are cladded with ferrous alloy by laser; and outer rings of the glasses are cladded with nickel tungsten alloy by laser. The ferrous alloy comprises chemical components of 0.40-0.70 wt% of C, 2.0-3.0 wt% of B, 20-24 wt% of Cr, 4-7 wt% of Ni, 1.8-3.0 wt% of Si and the balance of Fe. The nickel tungsten alloy comprises chemical components of 2.2-2.7 wt% of C, 10-13 wt% of Cr, 1.8-2.8 wt% of Si, 50-60 wt% of W, 1.5-2.4 wt%of B and the balance of Ni. In order to prolong a service life of the wear plate and according to failure characteristics of different working positions, different alloy materials are cladded by laser to reach the goal of saving precious metal materials and reducing processing cost.

Description

technical field [0001] The invention relates to a spectacle plate of a concrete pump truck and laser cladding surface technology, and belongs to the technical field of laser processing. Background technique [0002] The S-shaped pumping distribution valve is a key part of the concrete pump. It is a mechanism that connects the delivery cylinder and the delivery pipe and coordinates the actions of each component, which directly affects the performance of the concrete pump. The spectacle plate is an easy-wearing part in the S valve, which communicates with the concrete delivery cylinder. The moving part, the S tube, is driven by the swing cylinder to switch the concrete from one side of the concrete cylinder port to the other side of the concrete cylinder port. The cutting ring follows the S tube It moves against the spectacle plate and forms a switching friction pair with the spectacle plate. Since the working medium is concrete, the rapid swing of the cutting ring causes str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C22C38/54C22C19/05F04B53/00
Inventor 杨胶溪
Owner BEIJING UNIV OF TECH
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