Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Steel surface coating, preparation method and device

A technology for surface coating and workpiece surface, applied in the direction of coating, metal material coating process, etc., can solve the problems of difficult to further improve the cladding efficiency, low surface flatness, waste of cladding materials, etc., to avoid cracking behavior, The effect of reducing cooling rate and improving production efficiency

Pending Publication Date: 2020-03-27
中山市名鼎科技节能有限公司
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of laser induction composite cladding, the cladding powder is fed into the laser molten pool in the form of solid particles or preset on the surface of the substrate. Difficult to further improve
The Chinese invention patent application with the publication number CN108456879A discloses that the maximum scanning degree of laser induction composite cladding is only 30m / min, which is far lower than the scanning speed of the high-speed cladding disclosed in CN108220951A. In addition, the surface flatness of laser induction composite cladding is low For high-speed cladding, the undulation of the surface during multi-pass cladding leads to a large subsequent processing allowance, resulting in waste of cladding materials

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Steel surface coating, preparation method and device
  • Steel surface coating, preparation method and device
  • Steel surface coating, preparation method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Using induction-assisted high-speed laser cladding technology, a wear-resistant and corrosion-resistant coating is prepared on the surface of hydraulically supported 27SiMn steel with a diameter of 70mm. Rockit 401 iron-based alloy powder is used, and its composition (Wt.%) is: 0.15C-18.5Cr -0.5Mo-2.5Ni-77Fe-0.5Mn-Others. Its implementation steps are as follows:

[0048] (1) Remove the oil and rust on the surface of the hydraulic support base, clamp it on the chuck of the CNC machine tool, and use the top to align the center hole of the hydraulic support and tighten it;

[0049] (2) adopt image 3 For the induction heating coil and heating method shown, adjust the gap between the workpiece and the induction coil to 1mm to achieve preheating of the workpiece, and set the induction heating temperature to 900°C;

[0050] (3) Put the rockit401 iron-based alloy powder into the hopper of the powder feeder, and adjust the powder feeding amount to 300g / min;

[0051] (4) Adju...

Embodiment 2

[0054] Using induction-assisted high-speed laser cladding technology, a wear-resistant and corrosion-resistant coating is prepared on the surface of a 40Cr steel rod with a diameter of 100mm. Ni65 nickel-based alloy powder is used, and its composition is (Wt.%): 0.8C-16Cr-4Si-3.2 B-15Fe-5W-bal.Ni, the powder particle size is 300 mesh to 500 mesh. Its implementation steps are as follows:

[0055] (1) Remove the oil stain and rust on the surface of the 40Cr steel rod substrate, clamp it on the chuck of the CNC machine tool, and use the top to find the center hole of the 40Cr steel rod substrate;

[0056] (2) adopt figure 2 In the induction heating method shown, adjust the gap between the workpiece and the induction coil to 15mm to realize preheating and afterheating of the workpiece, and set the induction heating temperature to 800°C;

[0057] (3) Put the Ni65 alloy powder into the powder feeder hopper, and adjust the powder feeding rate to 100g / min;

[0058] (4) Adjust the ...

Embodiment 3

[0061] Using induction-assisted high-speed laser cladding technology, a high-temperature wear-resistant and anti-oxidation coating was prepared on the surface of the H13 hot extrusion die with a diameter of 200mm. Stellite No. 12 cobalt-based alloy powder was used, and its composition was (Wt.%): 1.4C-29.5Cr-1.45Si-3.0Fe-8.25W-0.5Mn-3.0Ni-bal.Co, the powder particle size is 275 mesh to 500 mesh. Its implementation steps are as follows:

[0062] (1) Remove the oil and rust on the surface of the H13 hot extrusion die base, clamp the H13 hot extrusion die base on the chuck of the CNC machine tool, and use the top to align the center hole of the H13 hot extrusion die base;

[0063] (2) adopt Figure 4 In the induction heating method shown, adjust the gap between the workpiece and the induction coil to 5mm to realize post-heating of the workpiece, and set the induction heating temperature to 100°C;

[0064] (3) Put Stellite No. 12 alloy powder into the powder feeder hopper, and a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a steel surface coating, a preparation method and a device. The coating is prepared and obtained by iron-base alloy powder, nickel-base alloy powder, cobalt-base alloy powderor cermet composite alloy powder, and the preparation method is characterized in that an induction coil is adopted for simultaneously heating a workpiece while high-speed laser cladding is carried outso as to achieve composite processing; and the device comprises a laser, a transmission fiber, a high-speed laser cladding head, a powder feeder, a numerical control machine tool, an induction powersupply, the induction coil, an infrared thermometer, a temperature controller and the like. According to the preparation method, iron base, nickel base, cobalt base and a cermet composite cladding layer with the hardness of 68 HRC or above can be prepared, the residual stress and the cracking tendency of the cladding layer can be reduced, the problem of easy cracking when the large-area, large-thickness and high-hardness cladding layer is prepared by high-speed laser cladding is solved, the thickness of the cladding layer can reach 15 mm or above, and the cladding linear speed of the claddinglayer can reach 25 m / min to 300 m / min, and the cladding efficiency of the cladding layer can reach 300 g / min.

Description

technical field [0001] The invention relates to the technical field of steel surface treatment and laser processing, in particular to a steel surface coating, a preparation method and a device. Background technique [0002] In the field of mechanical processing, metal surfaces often need to be treated with wear resistance, high temperature resistance or corrosion resistance. Laser cladding is one of the methods to form high-performance coatings on metal surfaces. High-speed laser cladding is an advanced laser cladding technology proposed by the Fraunhofer Institute. Compared with the traditional laser cladding technology, the main difference between this method is that the interaction between the powder and the laser beam is different during the laser cladding process. During high-speed laser cladding, the powder is directly heated by the focused laser beam to a molten or semi-molten liquid state before entering the laser melting pool, and then the liquid metal is sprayed in...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C22C38/44C22C38/04C22C38/32C22C38/22C22C38/34C22C38/02C22C19/05C22C19/07C22C29/08
CPCC23C24/103C22C38/44C22C38/04C22C38/32C22C38/22C22C38/34C22C38/02C22C19/056C22C19/07C22C29/08
Inventor 石少军汤传宏虞海域
Owner 中山市名鼎科技节能有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com