Guide roller for backwards-bending machine and manufacturing method of guide carrier rollers of guide roller

A technology for guide rollers and manufacturing methods, which is applied in the field of manufacturing guide rollers for back bending machines and guide rollers, which can solve the problems affecting the production quality of steel pipes, deviation of steel pipe conveying, and easy shifting of the center of gravity, etc., to achieve a stable center of gravity , Improving the conveying accuracy, the smooth and precise effect of the conveying process

Active Publication Date: 2015-05-20
安徽五洋机床制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems in the prior art of processing large-diameter, large-wall-thick, and high-pressure-resistant steel pipes that are unstable, the center of gravity is easy to shift, and steel pipes are conveyed off-track, thereby affecting the production quality of steel pipes, the invention provides a guide roller for a back bending machine and its The manufacturing method of the guide roller, the device manufactured by the method of the present invention has high precision, good wear resistance, and long service life. Increase the stability of steel pipe transportation and improve the processing quality of steel pipes

Method used

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  • Guide roller for backwards-bending machine and manufacturing method of guide carrier rollers of guide roller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as figure 1As shown, a guide roller for a back bending machine includes a guide roller 2, a roller shaft 3, a roller seat 4 and a guide roller frame 5, and the roller shaft 3 is provided with a keyway; the guide roller 2 is installed on the roller through a key connection. On the shaft 3, the guide roller 2 and the roller 3 are interference fit; the roller seat 4 is provided with a sliding bearing; the roller 3 is connected to the roller seat 4 through the sliding bearing, and there are two roller seats 4, symmetrically Installed on the guide roller frame 5; the longitudinal section of the guide roller 2 is a truncated cone, one of the two ends is the upper bottom surface, the other is the lower bottom surface, the diameter of the upper bottom surface is 400mm, and the diameter of the lower bottom surface is 900mm. The surface of the guide roller 2 The inclination angle with the horizontal plane is 30°; there are two guide rollers 2; two truncated conical guide rol...

Embodiment 2

[0051] A method for manufacturing a guide idler of a guide roller for a back bending machine, the steps of which are:

[0052] A Raw material preparation: The composition and weight percentage of the material used for the guide roller are: C: 1.80%, Si: 2.6%, Mn: 0.9%, Cr: 1.10%, S≤0.05%, P≤0.05%, the balance is Fe;

[0053] B heat treatment: annealing the forged blank in step A, the annealing temperature is 720°C, heat preservation for 2 hours, and air cooling;

[0054] C initial processing: initially processing the forging blank after heat treatment in step B into the overall shape of the guide roller with a lathe;

[0055] D quenching and tempering treatment: heating the guide roller after the initial processing in step C to a temperature of 830°C, keeping it warm for 1 hour, and water quenching;

[0056] E deep processing: finely grinding the outer surface of the guide roller after quenching and tempering treatment in step D;

[0057] F surface coating treatment, surfac...

Embodiment 3

[0061] A method for manufacturing a guide idler of a guide roller for a back bending machine, the steps of which are:

[0062] A Raw material preparation: The composition and weight percentage of the material used for the guide roller are: C: 2.11%, Si: 1.8%, Mn: 1.3%, Cr: 0.70%, S≤0.05%, P≤0.05%, and the balance is Fe;

[0063] B heat treatment: annealing the forged blank in step A, the annealing temperature is 760°C, heat preservation for 3 hours, and air cooling;

[0064] C initial processing: initially processing the forging blank after heat treatment in step B into the overall shape of the guide roller with a lathe;

[0065] D quenching and tempering treatment: heating the guide roller after the initial processing in step C to a temperature of 850°C, keeping it warm for 2 hours, and water quenching;

[0066] E deep processing: finely grinding the outer surface of the guide roller after quenching and tempering treatment in step D;

[0067] F surface coating treatment, s...

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Abstract

The invention discloses a guide roller for a backwards-bending machine and a manufacturing method of guide carrier rollers of the guide roller, and belongs to the field of backwards-bending machines. The problems that in the prior art, when a large-aperture, large-wall-thickness and high-pressure-resistant steel pipe is machined, conveying is not stable, and quality is not high are solved. The guide roller comprises the guide carrier rollers, a roller body, a roller body base and a guide roller rack, wherein the guide carrier rollers are arranged on the roller body which is arranged on the roller body base; the roller body base is installed on the guide roller rack; the longitudinal sections of the guide carrier rollers are shaped like a circular truncated cone, and the number of the guide carrier rollers is two; the two guide carrier rollers shaped like the circular truncated cone are installed on the roller body in the mode that the upper bottom faces of the guide carrier rollers are opposite; a guide wheel is arranged between the two guide carrier rollers shaped like the circular truncated cone; the guide wheel is in a disc shape, and the thickness of the center of the guide wheel is larger than the thickness of the edge of the guide wheel. The gravity centers of steel pipes to be machined can be accurately aligned, openings of the steel pipes are kept on the same straight line all the time, the steel pipe conveying stability is greatly improved, and the steel pipe machining quality is improved.

Description

technical field [0001] The invention belongs to the field of back bending machines, and in particular relates to a manufacturing method of a guide roller for a back bending machine and a guide roller thereof. Background technique [0002] The back bending machine is a main equipment used in the process of processing the steel pipe after bending and forming. Due to the limitation of the bending machine, the open steel pipe after bending has two straight sides. The back bending machine mainly bends the open steel pipe. The straight edge is rolled into an open steel pipe that meets the required roundness. The steel pipe processed by the back bending machine is mainly used in natural gas and other pipelines. Because the steel pipe processed by it has a large diameter, a thick pipe wall, and high pressure resistance requirements, the stability of the back bending machine is required to be high. Since the steel pipe processed by the back bending machine is long and heavy, it is r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D43/08B23P15/00
CPCB21D43/08B23P15/00
Inventor 杨思锋
Owner 安徽五洋机床制造有限公司
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