Underfired forging die heater |
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| 申请号 | US3783669D | 申请日 | 1972-06-12 | 公开(公告)号 | US3783669A | 公开(公告)日 | 1974-01-08 |
| 申请人 | ALUMINUM CO OF AMERICA; | 发明人 | FURNEY C; | ||||
| 摘要 | A structure providing efficient gas heating of forging dies comprising a plurality of bearing bars made of a high strength metal located between the dies of a forging press and respective die supporting structures. The bars are spaced apart to accommodate gas fired burners and layers of heat insulation in such a manner that only the bearing bars receive forging loads, the layers of insulation and the burners, being accommodated in the spaces between the bearing bars, receive no forging loads. The bearing bars are provided with longitudinally extending openings for preheating and conducting the gas (or gas-air mixture) to the burners, and for limiting the conduction of heat from the dies to the die supporting structures. Each die supporting structure includes a plate or platen provided with slots adapted to receive and retain die clamping bolts, the bolts being located between adjacent bearing bars, and extending from the plate to and through respective clamps engaging the edges of the die and portions of at least two adjacent bearing bars extending beyond the edges of the die. | ||||||
| 权利要求 | 1. In combination with a forging press having opposed forging dies attached respectively to opposed die supporting structures, an arrangement for substantially uniformly heating at least one of said dies comprising, a plurality of bearing bars made of a high strength metal located between and in contact with at least one of the forging dies and its supporting structure, and spaced apart to provide a plurality of spaced compartments between said die and supporting structure for accommodating heat resistant insulation and burners adapted to be supplied with a combustible fluid, burners adapted to be supplied with the combustible fluid located in said compartments, and facing in the direction of said die, and a layer of heat resistant insulation located on the opposed sides of said bearing bars to insulate said burner compartments from the bearing bars, the location of said layers of insulation being such that the layers receive substantially no forging loads. 2. The structure of claim 1 in which the bearing bars are provided with at least one opening extending longitudinally therethrough, and are connected in fluid communication with the burners for preheating combustible fluid directed to the burners while simultaneously limiting the conduction of heat from the die to the supporting structure. 3. The structure of claim 1 including means for clamping at least one of the forging dies to its die supporting structure, said clamping means comprising, at least two slots provided in the supporting structure adjacent respectively opposed edges thereof, a clamp structure located in substantial respective alignment with each of said slots, and engaging respectively opposed edges of the die and portions of at least two bearing bars extending beyond the edges of the die, and at least two fasteners extending respectively between said clamp structures and said slots, with one end of each fastener being located respectively within said slots while the other end of each fastener extends respectively through openings provided in said clamp structures, with means securing said fasteners to said clamp structures and in said slots. |
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