CN203862747U

CN203862747U - Welded tube end rounding device

Info

Publication number: CN203862747U
Application number: CN201420282053.2U
Authority: CN
Inventors: 谈猛; 刘占增; 李烨; 黄雷
Original assignee: Wuhan Iron and Steel Group Corp
Current assignee: Wuhan Iron and Steel Group Corp
Priority date: 2014-05-30
Filing date: 2014-05-30
Publication date: 2014-10-08
Anticipated expiration: 2024-05-30

Abstract

The utility model discloses a welded tube end rounding device which solves the problem that the ellipticity of the existing welded tube end exceeds the standard. The welded tube end rounding device is composed of an upper arc plate, a lower arc plate and a jack, wherein the arc diameter of the upper arc plate and the arc diameter of the lower arc plate are slightly smaller than a welded tube to be rounded, the upper arc plate and the lower arc plate are tightly attached to the inner wall of the tube end of the welded tube, the two ends of the jack respectively abut against the central portion of the upper arc plate and the central portion of the lower arc plate, the upper arc plate and the lower arc plate are respectively the 1/4 periphery of the welded tube to be rounded, a thickness range of the upper arc plate is 6-16mm, and a thickness range of the lower arc plate is 6-16mm. The jack abuts against the upper arc plate and the lower arc plate to round the tube end of the welded tube. Vertical blocking plates are welded to the lateral end in the upper arc plate and the lateral end in the lower arc plate, so that the jack is prevented from inclining inwards. Extended handles are welded to the two edges of the outer side of the upper arc plate, so that the upper arc plate is convenient to hold and locate. The upper arc plates and the lower arc plate serve as molds, and the jack can abut against the upper arc plate and the lower arc plate to round the tube end of the welded tube. Thus, the problem that the ellipicity of the tube end in welded tube production exceeds the standard is solved, and the yield of products is improved.

Description

A kind of welded pipe end rounding device

Technical field

The utility model relates to a kind of welded pipe end rounding device.

Background technology

In Welded Pipe Production Process, owing to shunting or the reason such as sizing is not in place, easily cause the end elliptical degree of welded tube on production line to occur larger deviation, exceeded the requirement of standard to product, if these problematic semi-finished product are not processed, will cause great waste, reduce the lumber recovery of product, strengthen the production cost of enterprise.

Summary of the invention

The purpose of this utility model is to overcome prior art defect, and a kind of welded pipe end rounding device is provided.

The technical solution of the utility model is achieved in that a kind of welded pipe end rounding device, by upper curved plate, lower curved plate and jack, formed, upper curved plate and lower curved plate arc diameter are slightly less and relative being close to be placed on welded pipe end inwall than the welded tube for the treatment of full circle, upper curved plate and lower curved plate centre are withstood respectively in jack two ends, by jack, are pushed up and are pressed upper curved plate and lower curved plate by welded pipe end full circle.

Further, upper curved plate and lower curved plate are respectively for treating 1/4 of full circle welded tube circumference.

Further, upper curved plate and lower curved plate thickness range are 6 ~ 16mm.

Further, upper curved plate and lower curved plate medial end are respectively welded with standing baffle.

Further, outside upper curved plate, both sides are welded with the handle stretching out.

The utility model, push up and is pressed welded pipe end full circle by jack as mould with upper curved plate and lower curved plate, has solved during welded tube is produced the pipe end ovality of the appearance problem that exceeds standard, and has improved the lumber recovery of product.

Accompanying drawing explanation

Fig. 1 is the utility model structural representation.

In figure, 1-handle; 2-upper curved plate; 3-jack; 4-lower curved plate; 5-welded tube; 6-standing baffle.

The specific embodiment

Below in conjunction with accompanying drawing, be further described:

As shown in Figure 1, a kind of welded pipe end rounding device, by upper curved plate 2, lower curved plate 4 and jack 3 form, upper curved plate 2 and lower curved plate 4 arc diameters are than the little 5-10mm of welded tube 5 that treats full circle, and be relatively close to and be placed on welded tube 5 pipe end inwalls, upper curved plate 2 and lower curved plate 4 centres are withstood respectively in jack 3 two ends, upper curved plate 2 and lower curved plate 4 length are respectively for treating 1/4 of full circle welded tube 5 circumference, upper curved plate 2 and lower curved plate 4 thickness ranges are 6 ~ 16mm, close with welded tube 5 thickness for the treatment of full circle, by jack 3 tops, press upper curved plate 2 and lower curved plate 4 by welded tube 5 pipe end full circle, upper curved plate 2 and lower curved plate 4 medial ends are respectively welded with standing baffle 6 and prevent that jack 3 from inwardly toppling over, upper curved plate 2 both sides, outside are welded with the handle 1 stretching out and are convenient to hand-held location.

Ratio-frequency welded tube ∮ 457 * 7.9mm L415MB production process of take is example, standard-required ovality is 1.6, actually occurs that the pipe end section ovality of product is 3.5, and ovality exceeds the scope of standard-required, utilize the utility model to carry out full circle to it, concrete operation step is as follows:

1, the welded tube that pipe end is exceeded to standard places lower curved plate 4 in the bottom of its end, and lower curved plate 4 diameters are 450mm, and thickness is 7.9mm;

2, on lower curved plate 4, put jack 3 well, keep balance;

3, at the top of jack 3 inner wall of welded pipe, be close to and place upper curved plate 2, upper curved plate 2 diameters are 450mm, and thickness is 7.9mm;

4, the ovality of pipe end is reached in 1.6 scopes of product standard requirement to jack 3 pressurizations, keep pressure 6 minutes, by jack 3 pressure releases, finally measure pipe end ovality and reached 1.2, met standard-required.As fruit product grade of steel more than X60 or wall thickness more than 10mm, this process can be repeated 2-3 time.

Claims

1. a welded pipe end rounding device, it is characterized in that: it is comprised of upper curved plate, lower curved plate and jack, upper curved plate and lower curved plate arc diameter are slightly less and relative being close to be placed on welded pipe end inwall than the welded tube for the treatment of full circle, upper curved plate and lower curved plate centre are withstood respectively in jack two ends, by jack, are pushed up and are pressed upper curved plate and lower curved plate by welded pipe end full circle.

2. a kind of welded pipe end rounding device according to claim 1, is characterized in that: upper curved plate and lower curved plate are respectively for treating 1/4 of full circle welded tube circumference.

3. a kind of welded pipe end rounding device according to claim 1 and 2, is characterized in that: upper curved plate and lower curved plate thickness range are 6 ~ 16mm.

4. a kind of welded pipe end rounding device according to claim 1, is characterized in that: upper curved plate and lower curved plate medial end are respectively welded with standing baffle.

5. according to a kind of welded pipe end rounding device described in claim 1 or 4, it is characterized in that: outside upper curved plate, both sides are welded with the handle stretching out.