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Flanging process of saddle type lining and die

A flanging mold and lining technology, which is applied to the lining flanging process and the field of molds, can solve problems such as lining deformation

Inactive Publication Date: 2007-08-08
SHANGHAI WUJING CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, for molds that are generally used for lining flanging processing, after the mold is released from the furnace, the inner hole of the lower mold of the mold directly communicates with the air, so that the temperature of the inner cavity of the mold drops too quickly, and the lining is easily deformed.

Method used

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  • Flanging process of saddle type lining and die
  • Flanging process of saddle type lining and die

Examples

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Embodiment Construction

[0036] As shown in Fig. 3 and Fig. 4, a flanging mold of a saddle-shaped lining comprises an upper mold 1, a lower mold 2 and a blank holder 3 around the upper mold, and a thermal insulation ring 4 is arranged at the bottom of the lower mold 2, The blank holder 3 around the upper die and the lower die 2 are fixed by screws and nuts, and washers are arranged between the screws and nuts.

[0037] Screws are arranged on the top of the upper die 1 and the blank holder 3 .

[0038] The thermal insulation ring 4 is filled with thermal insulation pads, and the thermal insulation pads are aluminum silicate thermal insulation pads.

[0039] The flanging process of the saddle lining is as follows:

[0040] 1. Processing of saddle lining blank

[0041] 1] The blank is cut, and the inner and outer circles of the blank are given a margin;

[0042] 2] Turning the inner and outer circles of the blank;

[0043] 3] Apply protective paint on the surface of the blank;

[0044] 2. Compressio...

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Abstract

The invention relates to the flange process and mold for a saddle shape liner, with perfect dimension, sharp edge without wrinkle. The mold comprises upper and lower molds, edge compression ring around the upper mold, the lower mold having temperature preserving ring, with the upper and lower molds bolted with gaskets within. The process goes with the treatment of saddle liner blank, compressing the saddle liner, getting out the saddle liner from the mold when the mold is cooled. It uses zirconium as the liner material, with the temperature preserving ring to avoid the quick decreasing of cavity temperature.

Description

technical field [0001] The invention relates to a flanging process and mold for a lining, in particular to a flanging process and a mold for a saddle-shaped lining used in a pressure vessel equipment connection. Background technique [0002] Generally, in the process of lining flanging, it is first necessary to determine the flanging ratio of the blank, and the flanging ratio (the degree of deformation of the flanging hole) depends on the ratio of the diameter of the hole on the blank to the average diameter of the straight edge after flanging , that is, the flanging ratio is: K=d 0 / d d 0 - the diameter of the opening before flanging d - the average value of the straight edge after flanging t - the thickness of the material (see Figure 1, Figure 2); after determining the flanging ratio of the blank, it can be concluded that the blank needs to be flanged times. [0003] The flanging ratio is also affected by the following factors: [0004] 1. Material performance: the b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D37/10B21D37/12B21D19/12B23P23/04
Inventor 张志康包钟牧顾国帆
Owner SHANGHAI WUJING CHEM
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