Sintering devices and pressure sintering mechanisms with controllable atmosphere thereof

A pressure sintering mechanism with a controllable atmosphere, comprising:

• a telescopic tube, wherein at least a part of the telescopic tube is an elastically telescopic bellows section;
• two pressure components arranged opposite to each other, wherein the telescopic tube is configured between the two pressure components, the two pressure components are configured to seal an opening of an end of the telescopic tube when the two pressure components are close to each other to form a sealed sintering chamber inside the telescopic tube and apply pressure to a product inside the sintering chamber;
• and
• a heating component configured to heat the product inside the sintering chamber;
• wherein two ends of the telescopic tube are respectively a fixed end and a free end, one of the pressure components is fixedly sealed and connected to the fixed end of the telescopic tube to seal an opening of the fixed end of the telescopic tube, and the other one is arranged opposite to an opening of the free end of the telescopic tube;
• wherein the two pressure components consist of an upper pressure component and a lower pressure component, the upper pressure component is located above the lower pressure component, the fixed end of the telescopic tube is fixedly connected to the upper pressure component, and a sealing ring is arranged between the fixed end of the telescopic tube and the upper pressure component;
• wherein the lower pressure component includes a lower pressure head, the lower pressure head has a lower heating chamber and an insulating venting slot surrounding outside of the lower heating chamber, the lower heating chamber has an opening facing downward and the insulating venting slot has an opening facing upward, and the insulating venting slot is connected to the sintering chamber when the telescopic tube forms the sintering chamber;
• an annular slot is arranged on an upper surface of the lower pressure head or the free end of the telescopic tube, a sealing ring is embedded in the annular slot, and the insulating venting slot is located on an inner side of the sealing ring;
• the heating component includes a lower heating element, the lower heating element is configured within the lower heating chamber;
• and
• an outer wall of the lower pressure head is arranged with an air inlet and an air outlet, and the air inlet and the air outlet are connected to the insulating venting slot.