Preparation technique of continuous casting crystallizer copper plate surface cermet coating

A continuous casting crystallizer and ceramic coating technology, which is applied in the coating process of metal materials, coating, superimposed layer plating, etc., can solve the problem of easy oxidation. It should be sprayed as soon as possible without preheating and sand fragments are easy to Inlaid copper plate, coating cracks and other problems, to achieve the effect of uniform microscopic surface, disperse residual stress, and improve adhesion

Active Publication Date: 2014-03-05
XIXIA LONGCHENG SPECIAL MATERIALS CO LTD
View PDF5 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The surface roughness of this technical solution after sandblasting is 5~10um. Sandblasting is beneficial to obtain a highly active surface, but excessive sandblasting will make sand fragments easy to be embedded in the copper plate, and the surface activity of the copper plate after sandblasting is too high. It is extremely easy to

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Example

[0031] A cermet coating on the surface of a continuous casting mold copper plate and a preparation process thereof. The cermet coating includes a metal coating and a ceramic coating, the ceramic coating has a thickness of 0.1 to 1.5 mm, and the metal coating is nickel Or nickel-cobalt alloy electroplated layer (the content of cobalt is 0.5-30% of the coating mass), the thickness is 0.1mm-1.5mm;

[0032] The present invention will be further explained in the following six groups of experiments.

[0033] Group times123456 Intermediate layer nickel (Wt%)10099.591.583.575.570.0 Cobalt transition layer (Wt%)00.58.516.524.530.0 Coating thickness (mm)0.10.40.71.01.31.5 Transition layer thickness (mm)0.10.40.71.01.31.5

[0034] The preparation process of the cermet coating on the surface of the copper plate of the continuous casting mold includes the following steps:

[0035] ① Degreasing the surface of the copper plate: After the conventional chemical degreasing me...

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 a preparation technique of a continuous casting crystallizer copper plate surface cermet coating, which comprises the following steps: copper plate surface oil removal, copper plate surface sandblasting, transition layer preparation, coating preparation and heat treatment. The detection indicates that the microhardness of the cermet coating is 1532-1746HV, and the internal stress is 127-136 MPa, so the wear resistance and thermal crack resistance are good; the bonding strength of the coating is 176-189 MPa, so the bonding property is good; the thermal conductivity is 15.2-16.5W/(m.k); and the cermet coating can lower the thermal crack of the crystallizer copper plate in the high-temperature region, can effectively decelerate the heat conduction inside crystallizer (especially the meniscus surface), and can be widely used in continuous casting of a high-speed continuous caster.

Description

technical field [0001] The invention belongs to the technical field of surface treatment, in particular to a preparation process of a cermet coating on the surface of a copper plate of a continuous casting crystallizer. Background technique [0002] In continuous casting production, crystalline copper plate is an important heat transfer component for continuous casting from molten steel solidified into a solid billet shell, and its quality directly affects the quality of the billet surface and the operating rate of the continuous casting machine. With the development of large-scale continuous casting equipment, high casting speed, on-line width adjustment, flow control, breakout prediction and other technologies, the thermal load of the mold copper plate has greatly increased, and the mold copper plate is subject to edge wear and wide surface high temperature during use. Problems such as thermal cracks at the slag line in the area, narrow surface shrinkage, high-temperature ...

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): C23C28/02C25D3/16C25D3/56C23C4/12C23C4/06B22D11/059C23C4/129C23C4/18
Inventor 朱书成徐文柱黄国团
Owner XIXIA LONGCHENG SPECIAL MATERIALS 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