Blog
We look forward to working with you,mutual benefit and win-win,create brilliant!
Let's help you
MoreLatest News
Precision roll manufacturers prompt roll life extension
Release time:
2018-12-06 11:27
It is believed that there are four main forms of roll damage: roll body fracture, roll neck fracture, peeling and roll body cracking. Among them, roll spalling is the primary form of damage, which is also the main reason for roll damage and even early scrap.
It is believed that there are four main forms of roll damage: roll body fracture, roll neck fracture, peeling and roll body cracking. Among them, roll spalling is the primary form of damage, which is also the main reason for roll damage and even early scrap.
Roll spalling not only leads to the difficulty of roll grinding organization, greatly increases the direct cost of strip steel production, and directly threatens the long-term normal and stable operation of strip steel rolling production line. Therefore, it is necessary to explore the causes of roll spalling and find out the effective way to extend the service life of the roll.
Precision roll manufacturers summarize the method of extending the service life of the roll:
The molten steel to be melted in the furnace is injected into the type through the gap between the surface of the roll mandrel and the copper type wall. The water-cooled copper type can not only solidify the molten steel to form a composite layer, but also serve as a non-consumable electrode, which provides electric energy to the slag pool to supplement the continuous consumption of heat energy. A very thin layer on the surface of the roll mandrel is melted and needs to be filled with composite liquid metal to form a composite layer between the roll mandrel and the copper type. The filling of molten steel can be continuous or step by step according to a preset procedure. The molten steel squeezes the slag to the top, and occupies the original position of the slag and merges with the melted part of the roll mandrel to form a composite layer. During the compounding process, the fused and solidified part is pulled out of the copper mold and the next part is continuously poured. The use of ESSL volume technology has produced a new generation of high-speed steel material composite roll, the roll containing a large amount of carbide-forming elements, roll life increased by several times, not only resistant to thermal fatigue, but also resistant to a variety of corrosion.
Latest News
Contact Us
Tel :+86-514-87736047
Phone :+86-15062802588
E-mail : market@nanyangmill.com
Address : Yangshou industry park,Hanjiang District, Yangzhou City, Jiangsu Province, China
Business License
This website already supports IPV4 / IPV6 bidirectional access