Seamless Steel Pipe Wall Thickness Accuracy Improvement Measures

Seamless steel pipe wall thickness control is a difficult steel pipe production, measures to improve the production of seamless steel pipe wall thickness accuracy mainly includes the following aspects:

1, Tube heating
Heat uniformly prohibit rapidly elevating temperature. Each heating and cooling to maintain a slow and steady, the maximum temperature does not exceed the lift 30 ℃.

2, Centering rollers
Determine whether the centering roller is mounted in place, adjust the roll core holding center, the opening angle of the opening movement and all the same size, hold the center of the core roll to the rolling line.

3, Rolling centerline
Ensure a consistent rolling piercer piercing car center line and the center line, to avoid "rolled on" or "rolling down" so that the tube holding force even when the perforation.

4, Rolling tool
For wear head, guide and roller rolling tool must be promptly replaced.

5, Rolling tool mounting
Roll from the center of the guide must be from the rolling line. Guarantee from the centerline of the guide rollers and in piercing and rolling from the center line, ie upper and lower rollers from equal distance about equal to the guide.

6, Piercing mandrel
Perforation jack usually selected outer diameter Φ108mm-Φ114mm, wall thickness and wall thickness requirements ≥25mm uniform thick-walled tube.

7, The mandrel mill
To choose the mandrel and the thick walled tube processing, the smaller size of the mandrel can be used instead of a solid billet. Uniform thickness of the thick-walled tubes and solid blanks, you can make the probability of a significant reduction in the mandrel bending deformation, can effectively improve the precision of the thickness of steel pipe.

8, precision mandrel
Slenderness mandrel is relatively large, generally use the first car to break the outer diameter of the mouth and then welding, or using a long material directly Turning molding. Mandrel outer precision control ± 0.1mm, straight mandrel deviation of not more than 5mm. When welding, the mandrel is inserted between the two sections of a positioning pin of finishing, in order to prevent total straightness tolerances from welding too large.

9, Process improvement
Process improvement, preventing intermediate pull thin wall thickness and increase Haou exceeds the control range of the occurrence and improve the thickness accuracy.

Hunan Standard Steel Pipe Co.,Ltd: https://www.hu-steel.com
Address: #112,Fuyuan Ave ,Xinsha Industrial Zone Changsha,Hunan,China
Postcode: 410000
Tel: +86 731-88787781
E-mail: info@hu-steel.com
Seamless steel pipe: https://www.hu-steel.com/product85.html
Carbon Seamless line pipe: https://www.hu-steel.com/product85_1000.html
ERW steel pipe: https://www.hu-steel.com/product90_985.html

Hunan Standard Steel Pipe Co.,Ltd (HSCO) as the professional manufacturer of steel pipe and pipe fittings, The company is located in an industrial zone in Xinsha town,Changsha city ,Standard Steel will ,taking the scientific developments view as guideline in its overall reformation and develepment, stick to the development of quality -profitability road under the guidance of science and technology ,and persist in extraversive development with implementation of strategy of taking central china as standing ground and developing southwest,The group will makes the great efforts to reach a production scale of more than 10 million tons with an annual sales income of over 30 billion RMB into the rank of 500 top steel enterprises in the word. For more, visit: https://www.hu-steel.com

This release was published on openPR.