A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention belongs to the field of recrystallized silicon carbide product forming, and particularly relates to an isostatic pressing forming process for a recrystallized silicon carbide product. The isostatic pressing forming process for the recrystallized silicon carbide product comprises the following steps: mixing, by weight, 70-85 parts of silicon carbide granular sand, 15-30 parts of silicon carbide micro powder and 0.7-2 parts of an adhesive; bagging and sealing the mixture; carrying out isostatic compaction on the mixture under the pressure of 175-240 MPa to obtain a biscuit; carrying out pressure maintaining on the biscuit for 120-170 s to obtain a green body; and carrying out pressure relief, uncovering and taking out, workblank machining and sintering on the green body to obtain the recrystallized silicon carbide product. The granular sand and micro powder added into the prepared silicon carbide product biscuit are uniformly distributed and tightly combined, the densified biscuit and particles are tightly contacted and are easy to sinter, the density of the sintered product is high, and the performance and additional value of the recrystallized silicon carbide product are high.
本发明属于重结晶碳化硅制品成型领域，尤其涉及重结晶碳化硅制品等静压成型工艺。本发明提供的重结晶碳化硅制品等静压成型工艺，包括以下步骤：将如下重量份的原料混合：碳化硅粒度砂70‑85份，碳化硅微粉15‑30份，粘接剂0.7‑2份；将混合料装袋封口；将混合料等静压成型，压力为175‑240MPa，得到素坯；将素坯保压，保压时间为120‑170s，得到生坯；将生坯分别进行卸压、开盖取出、毛坯加工和烧结，得到重结晶碳化硅制品。本发明制得的碳化硅制品素坯中配入的粒度砂和微粉分布均匀、结合紧密，致密化的素坯，颗粒紧密接触，容易烧结，烧结制品的密度高，重结晶碳化硅制品的性能和附加值高。
The invention belongs to the field of recrystallized silicon carbide product forming, and particularly relates to an isostatic pressing forming process for a recrystallized silicon carbide product. The isostatic pressing forming process for the recrystallized silicon carbide product comprises the following steps: mixing, by weight, 70-85 parts of silicon carbide granular sand, 15-30 parts of silicon carbide micro powder and 0.7-2 parts of an adhesive; bagging and sealing the mixture; carrying out isostatic compaction on the mixture under the pressure of 175-240 MPa to obtain a biscuit; carrying out pressure maintaining on the biscuit for 120-170 s to obtain a green body; and carrying out pressure relief, uncovering and taking out, workblank machining and sintering on the green body to obtain the recrystallized silicon carbide product. The granular sand and micro powder added into the prepared silicon carbide product biscuit are uniformly distributed and tightly combined, the densified biscuit and particles are tightly contacted and are easy to sinter, the density of the sintered product is high, and the performance and additional value of the recrystallized silicon carbide product are high.
本发明属于重结晶碳化硅制品成型领域，尤其涉及重结晶碳化硅制品等静压成型工艺。本发明提供的重结晶碳化硅制品等静压成型工艺，包括以下步骤：将如下重量份的原料混合：碳化硅粒度砂70‑85份，碳化硅微粉15‑30份，粘接剂0.7‑2份；将混合料装袋封口；将混合料等静压成型，压力为175‑240MPa，得到素坯；将素坯保压，保压时间为120‑170s，得到生坯；将生坯分别进行卸压、开盖取出、毛坯加工和烧结，得到重结晶碳化硅制品。本发明制得的碳化硅制品素坯中配入的粒度砂和微粉分布均匀、结合紧密，致密化的素坯，颗粒紧密接触，容易烧结，烧结制品的密度高，重结晶碳化硅制品的性能和附加值高。
Isostatic pressing forming process for recrystallized silicon carbide product
重结晶碳化硅制品等静压成型工艺
LIU JUN (author)
2021-06-22
Patent
Electronic Resource
Chinese
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