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
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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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