From March 10th to 12th, 2025, the company participated in the 2025 (17th) China International Powder Metallurgy, Cemented Carbide & Advanced Ceramics Exhibition held at the Shanghai World Expo Exhibition & Convention Center. This exhibition focused on the global industrial ecosystem and comprehensively showcased the innovative achievements of the entire industrial chain, from raw materials, powder preparation, forming, sintering and finishing equipment, precision components to end - products. Industry experts gathered to decipher the direction of technological change!

Pressureless sintering is considered a promising method for SiC sintering. Based on different sintering mechanisms, it can be further divided into solid-phase sintering and liquid-phase sintering. S. Proehazka achieved a SiC sintered body with a density exceeding 98% by pressureless sintering at 2020°C using ultrafine β-SiC powder (oxygen content < 2%) with additions of boron (B) and carbon (C). A. Mulla et al. utilized Al₂O₃ and Y₂O₃ as additives to sinter 0.5 μm β-SiC (with trace surface SiO₂) at 1850–1950°C, obtaining SiC ceramics with a relative density >95% of the theoretical value and fine grains averaging 1.5 μm in size.

The silicon carbide (SiC) sintering furnace is utilized for the vacuum reaction sintering of silicon carbide materials. As a pivotal equipment in SiC material production, this furnace ensures superior process performance in the sintered products. The resulting SiC materials exhibit uniform particle size, complete reaction, high compound content, and excellent quality. Equipped with a dewaxing system, it enhances wax removal efficiency while maintaining stable furnace atmosphere, thereby extending the service life of carbon felt and heating elements. The furnace employs resistive or inductive heating with long-lasting graphite tube heating elements, delivering efficient heating performance and ease of maintenance.

The silicon carbide sintering furnace is a batch-type resistance heating furnace primarily used for pressureless silicon carbide sintering, as well as in the cemented carbide and powder metallurgy industries for producing metal powders and composite powders such as tungsten carbide (WC), chromium carbide (Cr₃C₂), titanium carbide (TiC), and vanadium carbide (VC). After cold pressing, these materials undergo sintering treatment. The system supports up to 200 distinct process heating curves.

The seals of vacuum brazing furnaces are essential to maintaining the vacuum environment in the furnace. Proper maintenance can extend their service life and ensure the normal operation of the equipment. Here are some key points on how to maintain the seals:Regular inspection: The condition of all seals should be checked regularly, including whether there are signs of wear, cracks or deformation. Pay special attention to those parts that are frequently opened and closed and those that are subjected to greater pressure. Any damaged seals should be replaced in time.

Reducing energy consumption during vacuum brazing can be achieved through process optimization in many aspects. Here are some key strategies:Improve heating efficiency: Selecting efficient heating elements and insulation materials can significantly reduce energy loss. For example, using high-performance insulation layers can reduce heat loss and ensure that the heating elements can quickly and evenly transfer heat to the workpiece.

The vacuum system of a vacuum brazing furnace is a key part to ensure that the required high vacuum level is achieved in the furnace, thereby achieving oxidation-free, high-quality brazed joints. The system is usually composed of the following key components:

Vacuum heat treatment furnaces are particularly suitable for processing materials that have strict requirements for purity, surface quality and microstructure due to their unique working environment. The following are some types of materials suitable for processing in vacuum heat treatment furnaces: