【摘要】 本文论述了剖分式组合套模材料选择及热处理特点，并作了组合套模的受力分析。剖分模芯结构明显地降低了尖角处的应力集中，并且采用磨削加工，使模芯表面光洁度提高，从而使模具的耐磨性及疲劳寿命提高。组合套结构完全改变了模芯受力条件，使其在预应力状态下工作。此种结构正好起到扬硬质合金耐磨性之长避其脆性之短的作用。最后，文章还特别以Ｍ２２模具为例，作了新旧模具经济效益的对比。更多还原

【Abstract】 The paper describes the material selectionand the heat treatment characte- ristics on the mould of the split core and the combination sleeve, and analy- ses its suffering force condition in the assembly and the working conditions. The split mould core reduces the stress concentration in the corner, and using the grinding machiningthe, surface finish of the mould core can increase, so that the resistance to the wear and the fatigue life of the mould can also increase. The combination sleeve changes the suffering force condition of the mould core and makes the mould core work in the pre-stress condition, This structure just plays a part in developing the resistance to the wear of the carbide and in avoiding the brittleness of the carbide. Eventually, the paper also takes M22 mould for example to describe the economic effectiveness of the new mould by contrast with the old mould.更多还原