The computer simulation of the temperature field in the working cell of the production unit during high-speed sintering under pressure of boron carbide powder samples is performed by the finite elements method. Consideration is given to the dependence of the thermophysical properties of a powder sample on the porosity and temperature. In order to minimize the temperature drop in the powder sample, the effect of the working cell design on the temperature drop in the sample is studied by computational modeling. Based on the computational experiments, the working cell design of the unit for high-speed sintering under pressure has been optimized and the heating conditions have been selected such that the sample sintering temperature of 2000°C is reached within 80 to 150 s and the temperature drop in the sample during the holding period for 100–150 s is within 50–30 deg. The laboratory experiments have revealed that the optimized working cell design provides an almost uniform distribution of microhardness in the sintered product.

中文翻译：

---

压力下高速烧结过程中生产装置设计参数对样品温度下降的影响

利用有限元方法对碳化硼粉末样品在压力下高速烧结过程中生产单元工作单元内温度场的计算机模拟。考虑了粉末样品的热物理性质对孔隙率和温度的依赖性。为了最小化粉末样品中的温度下降，通过计算模型研究了工作单元设计对样品中温度下降的影响。根据计算实验，优化了在压力下进行高速烧结的装置的工作单元设计，并选择了加热条件，以便在80到150 s内达到2000℃的样品烧结温度，并且在烧结过程中样品的温度下降保持时间100–150 s在50–30度内。实验室实验表明，优化的工作单元设计可在烧结产品中提供几乎均匀的显微硬度分布。