CN2761342Y

CN2761342Y - Welding seam on-line rolling device of stainless steel pipe

Info

Publication number: CN2761342Y
Application number: CN 200420076811
Authority: CN
Inventors: 陈刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-09-30
Filing date: 2004-09-30
Publication date: 2006-03-01
Anticipated expiration: 2014-09-30

Abstract

The utility model relates to an on-line rolling device for welding seams of stainless steel pipes, which is arranged between a pipe manufacturing device and a solid solution device during the course of manufacturing stainless steel pipes. The utility model is composed of two sets of rolling flat rollers and core rods, which is characterized in that each core rod arranged ahead of a plate bending device in the pipe manufacturing device is inserted into a stainless steel pipe by a fixed bar for core rods, and a spring is fixed between the fixed bar for core rods in the stainless steel pipe and the core rod; the two sets of rolling flat rollers are fixed at the upper and the lower ends of the stainless steel pipe in turn, and each rolling flat roller of each of the two sets of rolling flat rollers is provided with a corresponding notch. Because the utility model uses the rolling device to replace an original sanding device, welding seams of the manufactured stainless steel pipe are smooth, and the mechanical property of the whole pipe can be basically coincident, which ensures the subsequent solution treatment and lengthen the service life of the stainless steel pipe.

Description

The online rolling device of the weld seam of stainless steel tube

Technical field

The utility model belongs to a kind of steel pipe manufacturing installation, is a kind of online rolling device of weld seam of stainless steel tube specifically.

Background technology

Because the pipeline in the large-scale thermal power machine group condenser adopts stainless steel tube to substitute copper pipe more, chemical industry particularly, stainless steel used on the diet equipment all requires the flattening-out weld seam to seamed pipe, yet at the process (tubulation of making stainless steel tube, polishing, solid solution) in, the commissure of stainless steel welded pipe exists metal molten and recrystallization process, and joint edge is along there being the thermal stress influence, so mechanical property (hardness on commissure and joint edge edge, intensity, toughness) with mother metal certain difference is arranged, make the performance of commissure and the performance of whole welded tube there are differences, present method is that butt welded seam is polished, and does not reach employed requirement.

Summary of the invention

The purpose of this utility model provides a kind of weld seam that rolls, and is beneficial to the online rolling device of weld seam of the stainless steel tube of solution treatment, to overcome above-mentioned deficiency.

To achieve these goals, the utility model is arranged between the tuber and solid solution device in the process of making stainless steel tube, it rolls plain-barreled roll by two groups and plug constitutes, be characterized in: plug inserts in the stainless steel tube by the plug hold-down bars before the plate bending machine in tuber, be fixed with a spring between plug hold-down bars in the stainless steel tube and the plug, two groups are rolled plain-barreled roll and divide front and back to be fixed on the stainless steel tube upper and lower side;

Above-mentioned two groups are rolled every group of plain-barreled roll and roll rolling of plain-barreled roll and have corresponding breach on the plain-barreled roll.

Because the utility model replaces original sanding apparatus with rolling device, make that the stainless steel tube of making is smooth, can accomplish homogeneous tube mechanical property unanimity basically, guarantee follow-up solution treatment, and prolonged the service life of stainless steel tube.

Description of drawings

Accompanying drawing is a structural representation of the present utility model.

The specific embodiment

Further specify the utility model below in conjunction with accompanying drawing.

The utility model unloads the grinding head on the former tuber 6, on its position, install two groups and roll plain-

barreled roll

3,4, its power connects with main frame with power transmission shaft, realize rotation synchronously. two groups of pass processing that roll the plain-barreled roll small semicircle are big, be processed as the diameter of φ 28 as the small semicircle of the plain-barreled roll of φ 25, be contained on the flat axle by the direction of symmetry.

Operation principle of the present utility model is: when rolling plain-barreled roll 3 rotations, the circular arc that hole shape does not strengthen rolls (because the contact stress of high spot is big) by 2 pairs of stainless steel tubes of plug, 1 weld seam prominence, clipping plug 2 simultaneously travels forward and does not roll the position and roll to rolling 4 pairs of plain-barreled rolls, spring 5 between stretching plug hold-down bars 7 and the plug 2, roll plain-barreled roll when rotating to the circular arc that pass strengthens simultaneously when two groups, two groups are rolled plain-barreled roll the grinding pressure of stainless steel pipe are disappeared simultaneously, at this moment, because the effect of spring 5 makes plug 2 get back to the home position, for rolling, next round prepares, so repeatedly.

Claims

1, the online rolling device of a kind of weld seam of stainless steel tube, be arranged between the tuber (6) and solid solution device in the process of making stainless steel tube, it rolls plain-barreled roll (3), (4) and plug (2) by two groups and constitutes, it is characterized in that: plug (2) inserts in the stainless steel tube (1) by plug hold-down bars (7) before the plate bending machine in tuber, be fixed with a spring (5) between plug hold-down bars (7) in the stainless steel tube (1) and the plug (2), two groups are rolled plain-barreled roll and divide front and back to be fixed on the stainless steel tube upper and lower side.

2, the online rolling device of the weld seam of stainless steel tube as claimed in claim 1 is characterized in that: two groups are rolled every group of plain-barreled roll and roll rolling of plain-barreled roll and have corresponding breach on the plain-barreled roll.