Process and apparatus for performing a simultaneous and combined press-forming and heat-treatment of steel stock |
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| 申请号 | US3703093D | 申请日 | 1970-11-10 | 公开(公告)号 | US3703093A | 公开(公告)日 | 1972-11-21 |
| 申请人 | AISIN SEIKI; TOYODA CHUO KENKYUSHO KK; | 发明人 | KOMATSU NOBORU; SUZUKI TAKATOSHI; ITO TAKUO; HARA YOSHITERU; ASAKURA KOUICHI; | ||||
| 摘要 | The invention relates to a process for press-forming and heattreating a metallic stock for the manufacture of a specifically shaped product having locally different hardness distributions in specifically selected patterns. The forming and heating are performed in a simultaneous operation of the die press machine, whereby the stock is deprived of different amounts of heat at different temperatures in specifically localized zones. | ||||||
| 权利要求 | 1. A process for the simultaneous shaping and heat treating of steel sheet stock comprising preheating said stock up to its hardening temperature, pressing said stock into the desired form between two mating die units and simultaneously heat treating said stock by subjecting said stock to a differential heat deprivation effect by maintaining at least two distinct complementary portions of said die units at different temperatures lower than said hardening temperature. 1. A process for the simultaneous shaping and heat treating of steel sheet stock comprising preheating said stock up to its hardening temperature, pressing said stock into the desired form between two mating die units and simultaneously heat treating said stock by subjecting said stock to a differential heat deprivation effect by maintaining at least two distinct complementary portions of said die units at different temperatures lower than said hardening temperature. 2. A process as set forth in claim 1 further comprising maintaining one of said portions of said die units at a constant temperature corresponding to the isothermal transformation temperature of the stock material and cooling another of said portions of said die units to perform a quenching operation on said stock material. 3. An apparatus for performing a combined press-forming and heat-treating operation on preheated steel sheet stock comprising a pair of complementary upper and lower die units, each of said die units having a working surface corresponding to that of the related part of said stock when finished into a product, each of said units having at least two separate die elements, means for bringing said die units into and out of operative engagement with said stock, and cooling means for cooling at least one pair of complementary upper and lower die elements corresponding to a first selected zone of said stock thereby removing heat at a higher rate from said first selected zone of said preheated stock and at a slower rate from the remaining portion of said stock. |
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