Closed mold and process for producing automotive intake and exhaust flanges by virtue of closed mold

A production process and closed die technology, which is applied in the field of mechanical forging, can solve the problems of low material utilization rate, waste waste, unsightly appearance, etc., and achieve the effect of improving work efficiency, improving product quality, and beautifying the appearance of products

Inactive Publication Date: 2016-08-24
常州市凯国机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the shape of the automobile intake and exhaust flanges is irregular, the middle hole is large, waste waste is serious, and the utilization rate of materials is low, the production cost of the cold plate has been high, and the fracture surface of the product is not neat, not beautiful, and lacks industry competitiveness.
[0003] It is imperative for products in many fields to be realized by forging. More than 80% of the products in the industry will be realized by the open mold. The open mold is to put the raw materials into the mold cavity, squeeze out the waste edge, and then Cut off the waste edge to get the desired shape, so that the material utilization rate is not significantly improved, the edge density of the product is unstable, and the working environment is very poor, which is not a perfect forging production method

Method used

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  • Closed mold and process for producing automotive intake and exhaust flanges by virtue of closed mold
  • Closed mold and process for producing automotive intake and exhaust flanges by virtue of closed mold

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] like figure 1 As shown, it is the automobile intake and exhaust flange of the present invention. The flange includes a main body 1 with a middle hole 2 and a mounting hole 3 at both ends of the middle hole 2 . The ratio of the length of the mounting hole 3 to the aperture of the mounting hole 3 is 1.3-1.5:1, that is, the flange is a thick flange.

[0029] like figure 2 Shown, be the closed mold of the present invention, described closed mold comprises upper mold 4 and lower mold 5, and upper mold 4 and lower mold 5 surround and form molding cavity 6, and the shape of molding cavity 6 and described flange The shape fits.

[0030] A closed mold production process for an automobile intake and exhaust flange, comprising the following steps:

[0031] (a) Cutting: Use a cutting machine or a band sawing machine to saw the rod-shaped raw material into a spare blank of the size required by the process;

[0032] (b) Heating: heat the billet through an intermediate frequency ...

Embodiment 2

[0040] In the present embodiment, the structure of the flange and the closed mold is the same as in Example 1, the difference is that the preparation process of the flange is different, as follows:

[0041] A closed mold production process for an automobile intake and exhaust flange, comprising the following steps:

[0042] (a) Cutting: Use a cutting machine or a band sawing machine to saw the rod-shaped raw material into a spare blank of the size required by the process;

[0043] (b) Heating: heat the billet through an intermediate frequency furnace for 4S, and the heating temperature is 1100°C;

[0044] (c) Pre-forging: the heated billet is flattened with a mold, the working pressure of the machine tool for flattening the billet is 70T, and the temperature of the flattened billet is 1200°C;

[0045] (d) Final forging: put the flattened blank into the closed die cavity for processing, and the final forging working pressure of the machine tool is 850T to obtain the blank;

...

Embodiment 3

[0048] In the present embodiment, the structure of the flange and the closed mold is the same as in Example 1, the difference is that the preparation process of the flange is different, as follows:

[0049] A closed mold production process for an automobile intake and exhaust flange, comprising the following steps:

[0050] (a) Cutting: Use a cutting machine or a band sawing machine to saw the rod-shaped raw material into a spare blank of the size required by the process;

[0051] (b) Heating: heat the billet through an intermediate frequency furnace for 7S, and the heating temperature is 1200°C;

[0052] (c) Pre-forging: flatten the heated billet with a mold, the working pressure of the machine tool to flatten the billet is 50T, and the temperature of the flattened billet out of the furnace is 1200°C;

[0053] (d) Final forging: put the flattened blank into the closed die cavity for processing, and the final forging working pressure of the machine tool is 750T to obtain the ...

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Abstract

The present invention relates to the technical field of mechanical forging, specifically to a closed mold and a process for producing automotive intake and exhaust flanges by virtue of the closed mold. The process comprises the following steps: (a) material preparation: sawing rod-like raw materials into blanks, in size as required by the process, for use by using a material cutter or a belt-type saw machine; (b) heating: delivering the blanks into an intermediate-frequency furnace for heating the blanks; (c) pre-forging: flattening the heated blanks by using a mold; (d) finish-forging: placing the flattened blanks into a mold cavity of the closed mold and processing the blanks to obtain semi-finished products; and (e) mesopore punching: cutting mesopores in the semi-finished products and obtaining finished flange blanks. By using the processing process with the closed mold, the quality of flange products is greatly improved, the problem of the utilization rate of raw materials is saved, the production cost is reduced, and competitive products are produced.

Description

technical field [0001] The invention relates to the technical field of mechanical forging, in particular to a closed die and a closed die production process for automobile intake and exhaust flanges. Background technique [0002] As a representative of special-shaped products, automobile intake and exhaust flanges are mostly realized by cold stamping. Because the shape of the intake and exhaust flanges of automobiles is irregular, the middle hole is large, waste waste is serious, and the utilization rate of materials is low, the production cost of the cold plate has been high, and the fracture surface of the product is not neat, not beautiful, and lacks industry competitiveness. [0003] It is imperative for products in many fields to be realized by forging. More than 80% of the products in the industry will be realized by the open mold. The open mold is to put the raw materials into the mold cavity, squeeze out the waste edge, and then Cut off the waste edge to get the des...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J13/02B21J5/02B21K1/32
CPCB21J13/02B21J5/025B21K1/32
Inventor 郭雷
Owner 常州市凯国机械制造有限公司
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