Combined shaping mold

A combined molding and mold technology, used in molding tools, manufacturing tools, metal processing equipment, etc., can solve the problems of not getting uniform compression of metal, increase the design of pressing molds, etc., and achieve less metal cutting, weight reduction, and machine reduction. The effect of processing difficulty

Active Publication Date: 2008-08-20
ERZHONG GROUP DEYANG HEAVY EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] After the nozzle and the elbow are integrated, it is very difficult to design the pressing mold, and the metal at the inner nozzle part cannot be uniformly compressed during molding, and the asymmetrical outer nozzle part prevents the metal from stretching. Liquid supplement

Method used

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Experimental program
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Effect test

Embodiment 1

[0040] Embodiment 1: combined forming mold of the present invention is used for making Figure 1~Figure 3 In the hot section elbow of the reactor main pipe shown, the bending radius R of the curved section 1 on the pipe body of the elbow is R=1.5D, and a straight pipe section 2 is arranged at both ends of the curved section 1, and the straight pipe section 2 is close to the curved section 1 The two nozzles 3 are arranged at the position, and the two nozzles 3 are respectively arranged on the straight pipe section 2 at both ends of the curved section 1, the axes of the two nozzles 3 are not on the same plane, and D is the outer diameter of the pipe. The pipe body adopts the integrated structure of the integral forging made of ultra-low carbon stainless steel, and the straight pipe blank is made according to the structural shape of each part of the pipe body. Adopt the combined forming mold of the present invention to process the pipe blank, the filling rate of the core mold fil...

Embodiment 2

[0041] Embodiment 2: combined forming mold of the present invention is used for making Figure 4 In the hot section elbow of the reactor main pipe shown, the bending radius R of the curved section 1 on the pipe body of the elbow is R=1.5D, and a straight pipe section 2 is arranged at both ends of the curved section 1, and the straight pipe section 2 is close to the curved section 1 The two nozzles 3 are arranged at the position, and the two nozzles 3 are respectively arranged on the straight pipe section 2 at both ends of the curved section 1, the axes of the two nozzles 3 are on the same plane, and D is the outer diameter of the pipe. The pipe body adopts the integrated structure of the integral forging made of ultra-low carbon stainless steel, and the straight pipe blank is made according to the structural shape of each part of the pipe body. Adopt the combined forming mold of the present invention to process the pipe blank, the filling rate of the core mold filling the inne...

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PUM

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Abstract

The invention discloses a composite forming die for production of elbow, satisfying the high requirements of shape and position dimensions of superior elbow, which comprises an upper die, a bottom die and a core die; wherein, the core die is made by metal; the spatial filling rate of core die filling tube interior is above 95%. The composite forming die has the advantages of satisfying the high technical requirements of shape and position dimensions of superior elbow, good performance and metal structure of tube body, low machining difficulty, small amount of metal cutting, light weight of semifinished product piece, circular bending part of elbow, good feature of bending back arc thickness reduction, good feature of nominal wall thickness, good feature of minimum wall thickness, preventing non-roundness and thickness reduction of bending part, and being applicable to a plurality of superior elbows requiring the high demands of shape and position dimensions, compared with the prior elbow made by the method of machining.

Description

technical field [0001] The invention relates to a mold for making bent pipes, in particular to a combined molding die for making bent pipes with high requirements on shape, position and size. Background technique [0002] With the advancement of technology, in some major projects, it is necessary to make some components with high shape and size requirements, such as the hot section elbow of the main pipeline in the newly designed third-generation advanced large-scale AP1000 pressurized water reactor nuclear power plant. The hot section elbow of the main pipeline is welded from the original stainless steel segmental casting (the straight tube adopts centrifugal casting and the elbow adopts ordinary casting) into stainless steel integral forging with nozzle integration, and the segmented straight pipe, elbow, The nozzle is designed as an integrated forging, which increases the difficulty of manufacturing. The AP1000 reactor is not yet under construction. my country is the fir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D37/10B21D37/12B21D9/08
Inventor 宋树康邓林涛刘志颖刘志曾祥东
Owner ERZHONG GROUP DEYANG HEAVY EQUIP
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