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Special tooling and installation method for surfacing and assembly welding of small-diameter elbows

An installation method and small-caliber technology, applied in auxiliary devices, manufacturing tools, welding equipment, etc., can solve the problems of variable welding positions, inability to guarantee the quality of surfacing welding, special product structure, etc., achieve short manufacturing cycle and save manufacturing cost , the effect of simple design structure

Active Publication Date: 2017-01-25
HARBIN BOILER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a special tooling and installation method for surfacing and assembly welding of small-diameter elbows, which solves the problem that the welding position during manual surfacing welding is variable and the quality of surfacing welding cannot be guaranteed due to the special structure of the product.

Method used

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  • Special tooling and installation method for surfacing and assembly welding of small-diameter elbows
  • Special tooling and installation method for surfacing and assembly welding of small-diameter elbows
  • Special tooling and installation method for surfacing and assembly welding of small-diameter elbows

Examples

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Comparison scheme
Effect test

Embodiment 1

[0034] A special tooling for surfacing and assembly welding of small-diameter elbows, which consists of: a small rib 1, the small rib is connected to the bent plate 6, and the bent plate is connected to the large rib 2 and the middle rib respectively 3, base plate 10 is connected, and described base plate is connected with support fixed plate 11, and described support fixed plate is connected with bolt 7, nut 9, washer 8, large support 5 respectively, and described large support is connected with small support 4, The upper and lower head elbow assemblies are installed on the small bracket.

Embodiment 2

[0036] According to the special tooling for surfacing and assembly welding of small-diameter elbows described in Embodiment 1, the upper and lower head elbow assemblies include an upper head elbow assembly and a lower head elbow assembly, and the upper seal There is a small-diameter 90° elbow assembly elbow on the head and the lower head respectively. The material of the small-diameter 90° elbow assembly elbow is 12Cr2Mo1R, the nominal diameter DN is 150mm, and the inner diameter Di is Φ145mm , the wall thickness δ is 30mm, the bending radius R is 329mm, and the inner wall needs to be surfacing with stainless steel materials.

Embodiment 3

[0038] According to the installation method of small-diameter elbow surfacing welding and assembly welding special tooling described in embodiment 1 or 2, the method includes the following steps: before use, it should be welded on the rotary table of the positioner, so that the center of the workpiece is aligned with the positioner The center of rotation coincides, and the height and placement of the support are properly adjusted according to the size of the workpiece and the structure of the part to be welded, so as to ensure that the circular seam of the workpiece to be welded is always in the best flat welding position for welding.

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Abstract

Provided are a tool special for overlaying and assembly welding of small-caliber elbows and an installing method. At present, the elbows are manufactured by means of a traditional manufacturing process 'trisection-respective overlaying-assembly welding and overlaying', and the traditional manufacturing process is still widely adopted, has the advantages of being simple in required devices and low in manufacturing cost and has the shortcomings of being complicated and tedious in process, long in manufacturing period and large in manual overlapping work amount. The tool special for overlaying and assembly welding of the small-caliber elbows comprises a small rib plate(1), wherein the small rib plate is connected with a bent plate (6), the bent plate is connected with a large rib plate (2), a middle rib plate (3) and a base plate (10) respectively, the base plate is connected with a support fixing plate (11), the support fixing plate is connected with a bolt (7), a nut (9), a washer (8) and a large support (5), the large support is connected with a small support, and an upper seal head elbow module and a lower seal head elbow module are installed on the small support. The tool is mainly applied to overlaying and assembly welding of the small-caliber elbows and the installing method.

Description

[0001] Technical field: [0002] The invention relates to a small-diameter elbow special tooling for surfacing and assembly welding and an installation method. [0003] Background technique: [0004] At present, there are three forming methods and manufacturing problems for small-diameter elbow parts. The traditional manufacturing process of "three equal parts-respective welding-reassembly and welding" is adopted. This process method is still widely used today. The advantage is that the required equipment is simple and the manufacturing cost is low. The disadvantage is that the process is complex and cumbersome, the manufacturing cycle is long, and the workload of manual surfacing is large; [0005] The small-diameter elbow is a research and development bending process, that is, the straight pipe is first surfacing and then bent into a 90° elbow, that is, "welding first and then bending". The advantage is that the equipment required for the manufacturing process is simple, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K37/047
CPCB23K9/044B23K37/047
Inventor 马鸣张盛岩张亚奇李春光欧海燕
Owner HARBIN BOILER CO LTD