| 摘要 |
PCT No. PCT/SE92/00135 Sec. 371 Date Dec. 16, 1993 Sec. 102(e) Date Dec. 16, 1993 PCT Filed Mar. 4, 1992 PCT Pub. No. WO92/15439 PCT Pub. Date Sep. 17, 1992.Method for tempering a moulding tool intended for production of products of natural or synthetic polymers, which moulding tool includes one or more moulding parts made of sintered metal with communicating pores obtained by pressing at a high pressure and sintering at a high temperature of a powdered material, in which moulding part or parts a moulding cavity has then been made, whereby preferably the outer envelope surface of the moulding tool is tight. The method comprises tightly connecting one or more channels, capillary tubes or the like through the tight outer envelop surface to the mould material of the moulding tool situated inside, which material contains a large number of small communicating pores and feeding a gas having a suitable state and a suitable temperature through the channels thereby causing a rapid tempering of the moulding tool to a desired extent. |
