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        1. 您好,歡迎訪問濟南七和模具有限公司 !

          濟南七和模具有限公司

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            當前位置:首頁>新聞中心>新聞動態>大家對于塑膠模具鋼的熱處理操作了解多少呢?

            大家對于塑膠模具鋼的熱處理操作了解多少呢?

            來源:http://www.environmentandpeople.net/ 日期:2021-03-26 發布人:admin


            時代在進步,鋼鐵生產工藝和技術也在持續發展,而我們常用的型號就有很多,就比如塑膠模具鋼就應用于各行業領域,其具有材質均勻,優良的機械加工性能的特點,那么大家對于塑膠模具鋼的熱處理操作了解多少呢?下面七和模具鋼小編來告訴大家。
            With the progress of the times and the continuous development of steel production process and technology, there are many commonly used models. For example, plastic mold steel is used in various industries. It has the characteristics of uniform material and excellent machining performance. How much do you know about the heat treatment operation of plastic mold steel? The following seven and die steel Xiaobian to tell you.
            該鋼是真空熔煉的Cr-Ni-Mo合金鋼,出廠前已經過淬硬和回火處理。即硬度在360~400HBW。有很好的拋光性及光蝕刻花性能,耐磨性好,模具鋼壽命長。適合于制作注塑模、吹塑模、擠壓塑料模等。
            The steel is a vacuum melted Cr Ni Mo alloy steel, which has been hardened and tempered before leaving the factory. The hardness is 360 ~ 400hbw. It has good polishing and etching performance, good wear resistance and long service life of die steel. Suitable for injection mold, blow mold, extrusion mold, etc.
            模坯退火在保護氣氛爐中進行,加熱至700℃保溫2~4h后在爐中以不大于15℃/h的冷卻速度降至600℃出爐空冷。同樣粗加工后,模具在空氣爐中加熱到550℃保溫2h,爐冷至500℃空冷。
            The billet is annealed in a protective atmosphere furnace, heated to 700 ℃ for 2 ~ 4h, then cooled down to 600 ℃ in the furnace at a cooling rate of no more than 15 ℃ / h, and discharged for air cooling. Similarly, after rough machining, the mold is heated to 550 ℃ for 2 hours in the air furnace and cooled to 500 ℃ for air cooling.
            模具淬火加熱是在保護氣氛爐或鹽爐中進行的,首先在500~ 600℃下預熱30min,再升溫至850℃,高溫保溫系數為2min/mm,保溫結束淬人熱油或在300℃分級4~Smin后空冷,冷卻到50~ 70℃時,立即回火。
            The mold quenching heating is carried out in the protective atmosphere furnace or salt furnace. Firstly, it is preheated at 500 ~ 600 ℃ for 30min, then it is heated to 850 ℃, and the high temperature insulation coefficient is 2min / mm. After the insulation, it is quenched with hot oil or air cooled at 300 ℃ for 4 ~ smin. When it is cooled to 50 ~ 70 ℃, it is tempered immediately.
            該鋼還可以用火焰加熱或感應加熱淬火,使硬度達到50HRC,并在180~200℃回火2h。還可以在900~ 920℃滲碳降溫至860℃淬火并低溫回火2h,使硬度控制在58~ 60HRC,滲碳時間大于2h,溫度太高,淬火前應正火處理,細化晶?;虺ゾW狀碳化物。
            The steel can also be quenched by flame heating or induction heating to make its hardness reach 50 HRC and tempered at 180 ~ 200 ℃ for 2 h. It can also be carburized at 900 ~ 920 ℃, quenched at 860 ℃ and tempered at low temperature for 2 hours, so that the hardness can be controlled at 58 ~ 60HRC, the carburizing time is more than 2 hours, and the temperature is too high. Before quenching, normalizing treatment should be carried out to refine the grain or remove the network carbide.
            為提高模具耐蝕性和表面硬度,可在525℃下滲氮20h、層深DN達0.30mm,表面硬度達650HV。在570℃  2h后氮化處理,層深DN達0.10mm,表面硬度達到700HV。模具還可以鍍硬鉻處理,并在180℃脫氫4h以上。
            In order to improve the corrosion resistance and surface hardness of the die, nitriding can be carried out at 525 ℃ for 20h, the layer depth DN can reach 0.30mm, and the surface hardness can reach 650hv. After nitriding treatment at 570 ℃ for 2 h, the layer depth DN is 0.10 mm and the surface hardness is 700 HV. The die can also be plated with hard chromium and dehydrogenated at 180 ℃ for more than 4 hours.

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