Alloy ultrasonic-spraying strengthening method for roll pass surface of finishing roll of section steel and spraying material

A technology of supersonic spraying and surface alloying, which is applied in the direction of metal material coating process, coating, molten spraying, etc., can solve the problems of accelerated roll hole wear, high equipment precision requirements, and different thickness of alloy layer, etc., to achieve roll Effects of extended online time, improved steel quality, and extended roll life

Active Publication Date: 2015-05-13
ANHUI HENGYI HARD FACE ENG CO LTD
View PDF7 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing problems are: 1) EDM equipment has a large investment and high maintenance costs; 2) The precision of the equipment is high and the thickness of the alloy layer is different, the wear resistance of the alloy layer is poor, the effect is not ideal, and it cannot be used in the hole At the transition arc of the profile, the stress at the arc cannot be eliminated, and the wear of the roll pass is accelerated, and the service life is

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
  • Alloy ultrasonic-spraying strengthening method for roll pass surface of finishing roll of section steel and spraying material

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0014] Embodiment 1 The method of supersonic spraying strengthening method for the surface alloy of the finishing roll pass of section steel, the specific process is:

[0015] 1) Surface pretreatment a. When there is a fatigue layer on the surface and severely strained groove marks on the surface, it can be turned if the strength permits to provide space for thermal spraying; b. Remove oil, rust and paint on the surface of the workpiece To make the surface of the workpiece clean, the oily paint can be removed with a solvent cleaning agent. If the oil has penetrated into the matrix material, it can be removed by flame heating. The rust layer can be removed by acid leaching, mechanical polishing or sandblasting; c. Turning, Grinding or matching method to remove the wear layer on the surface of the roll, so that the surface roughness of the roll substrate is controlled between RA0.3 and RA3.0, and then sandblasted;

[0016] 2) Spraying a. Using conventional spraying equipment, choose ...

Example Embodiment

[0019] Example 2 The treatment was carried out in the same manner as in Example 1. The spraying material composition ratio is shown in Table 1, and the performance of the sprayed roll was tested. The specific data is shown in Table 2 below.

Example Embodiment

[0020] Example 3 The treatment was carried out in the same manner as in Example 1. The spraying material composition ratio is shown in Table 1, and the performance test of the sprayed roll is performed. The specific data is shown in Table 2 below.

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

No PUM Login to view more

Abstract

The invention discloses an alloy ultrasonic-spraying strengthening method for a roll pass surface of a finishing roll of section steel and a spraying material, and belongs to the technical field of material surface strengthening. Nano-scaled carbide alloy powder is selected and used in the method and includes 15-20% of nickel-aluminum powder, 50-70% of cobalt-tungsten carbide alloy powder, 10-20% of chrome-molybdenum-manganese composite powder and 5-15% of boron-tungsten composite powder. The method comprises the following steps: firstly, priming on the finishing roll of the section steel with the nickel-aluminum powder by 0.02 mm; secondly, fusing the cobalt-tungsten carbide alloy powder, the chrome-molybdenum-manganese composite powder and the boron-tungsten composite powder, and uniformly spraying a fused material to the surface of the roll, wherein the thickness of a spraying layer is 0.15-0.20 mm, a distance between a spray gun and a sprayed surface is 160-180 mm, and an included angle between the spray gun and the sprayed surface is not more than 90 degrees. The method adopts an alloy ultrasonic-spraying strengthening mode, so that the high-temperature resistance and the wear resistance of the roll pass surface are improved, the online time of the roll is prolonged, the total amount of steel is increased by more than one time, and the service life of the roll is prolonged by more than two times.

Description

Technical field [0001] The invention belongs to the technical field of material surface strengthening, and in particular relates to a supersonic spraying strengthening method for the surface alloy of a section steel finishing roll pass, and also relates to a spraying material. Background technique [0002] Roll is an important part of the rolling mill and one of the main spare parts consumed in rolling production. It plays a key role in the quality of section steel. The working conditions of the rolls are very bad, and because of the different linear speeds in the radial direction of the roll pass, relative sliding occurs between the section steel and the roll, and the phenomenon of steel rolling occurs, which increases the wear of the roll. In addition, stress is prone to appear at the transition arc of the finished roll pass. Concentrated, the rolls are locally damaged, the section steel will have surface scratches, buildups, and edge thickness differences during the rolling pr...

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
IPC IPC(8): C23C4/14C23C4/06
Inventor 陈克英张陈汪永荣
Owner ANHUI HENGYI HARD FACE ENG CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap