Hello, welcome to Jiangyin Lilong Hydraulicmachinery CO.,LTD.  
Collection Message Chinese
Home About us Products News Cases Technical Recruitment Message Contact us
Company News
Industry News
Contact us/    

Export department contact information
Email: info@

Domestic department contact information

Industry News   Position£ºHome >> News >> Industry News
Seamless steel pipe controlled rolling online of controlled cooling process
source:Jiangyin Lilong Hydraulicmachinery CO.,LTD. | release time:2016-3-28 | Views£º

Controlled rolling controlled cooling can reduce consumption of alloy, reduce production cost, thus is promoted in the seamless steel tube production, and initially formed online often, online quenching and rapid cooling, and other process online.


1, the online process


Online often also referred to as online normalizing, after hot rolling production line pipe rolling process, the steel in the austenite phase zone after air cooling or forced cooling, to get uniform metallurgical structure process.

The process consists of two phase change process:

1) cooling tubes from 1100 ¡æ to 1100 ¡æ, under the steel in the austenite to ferrite + pearlite;

2) after cooling of the seamless steel tube by heating, the ferrite + pearlite steel again into austenite.

Through online often, can make the steel group evenly, ?

<> TAG£º
print this page || close the window
Previous£ºPrecision seamless tube need how to maintenance and maintenance
Next£ºAnnual crude steel production in China for many years ranked first in the world
Related information
Home    |     About us     |     Cases     |     Products     |     News     |     Recruitment     |     Message    |     Contact us
Jiangyin Lilong hydraulic machinery co., LTD. All rights reserved all wuxi to provide technical support
Fax: 0510-81618720 email: jiangyinlilong@163.com Sue ICP for 10203657