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Technology for integrally forging valve with flange

A technology of integral forging and flanged valves, which is applied in the direction of valve devices, etc., can solve the problems of welding quality and the influence of the overall quality of valves, and achieve the effects of eliminating welding process, beautiful appearance and improving performance

Inactive Publication Date: 2011-09-28
DALIAN DAGAO VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The quality of its welding has a certain influence on the overall quality of the valve, and there are technical defects

Method used

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  • Technology for integrally forging valve with flange
  • Technology for integrally forging valve with flange
  • Technology for integrally forging valve with flange

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] The present invention is realized through the following technical solutions:

[0031] ①, the selection of blanks, in order to better forging and forming, we will develop the following forming process, and select the diameter of raw materials according to the cross section of the product Ф110 ~ 120mm;

[0032] ②. Medium frequency induction heating furnace GRT100×2000, medium frequency induction heating, heating time 50 seconds, material temperature 1100±50℃;

[0033] ③. Use the air hammer C41-750 to make the blank, the purpose is to remove the oxide skin on the surface of the blank;

[0034] ④, use image 3 The shown pre-forging die is pre-forged on a 1600-ton hot die forging press, and the material temperature is ≥1050°C;

[0035] ⑤, use Figure 4 The final forging die shown is 1600 tons of hot die forging press for final forging, and the material temperature is ≥1000 °C;

[0036] ⑥. The trimming temperature is ≥950°C on a 315-ton hot die forging press;

[0037] ⑦. ...

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Abstract

The invention adopts valve and flange integral forged formation, overcomes the defect in the prior art, and provides a technology for integrally forging a valve with a flange. In the technology, a valve and flange integral die forging mode is adopted, wherein a forging die is formed first, and then a forging machine is adopted for forging, so that once forming is achieved, a welding process is saved, the forging stream line of the valve and the whole performance are improved, and the nice appearance is achieved.

Description

technical field [0001] The invention relates to the technical field of integral manufacturing of a flanged high-pressure valve body, in particular to an integral forging of a 1 / 2-inch to 3-inch stop valve and a ball valve with a flanged valve body. Background technique [0002] The traditional high-pressure valve with flange valve body adopts split forging form, and the valve body and flange are connected by welding. The existing products are realized by split forging. First, the valve body and flange are forged separately, and then Then the flange and the valve body are welded together in the form of welding and then processed as a whole. The quality of its welding has a certain influence on the overall quality of the valve, and there are technical defects. Contents of the invention [0003] In order to solve the above-mentioned problems in the prior art, the present invention adopts the integral die forging of the valve body and the flange, which overcomes the deficienc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/02B21J1/06B21J1/04B21K1/24
Inventor 纪长全徐悦波白玉昌殷嘉祥
Owner DALIAN DAGAO VALVE
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