How to choose a suitable silicon carbide reaction sintering furnace?

03-03-2025       Author: KJ technology

To select a suitable silicon carbide reaction sintering furnace, it is necessary to comprehensively consider multiple factors such as production requirements, technical parameters, equipment quality, etc. The following are the specific points:

1. Production requirements

Output: Determine the production capacity of the customer's reaction sintering furnace based on the company's production scale and market demand. For example, for large-scale production of silicon carbide ceramic products, it is necessary to select a reaction sintering furnace with a large furnace size and a large furnace load to meet the production requirements.

Product type: Different silicon carbide products have different requirements for sintering processes. The production of silicon carbide substrates for semiconductor manufacturing requires a reaction sintering furnace with higher temperature uniformity and precise atmosphere control; the production of silicon carbide abrasives requires relatively low requirements for temperature control accuracy and heating rate.

2. Technical parameters

Temperature range: The temperature of silicon carbide reaction sintering is usually between 1400℃-2200℃. It is necessary to select a reaction sintering furnace that can meet the temperature requirements according to the specific process. To produce high-quality silicon carbide ceramics, it may be necessary to select a reaction sintering furnace with a maximum temperature of more than 2000℃.

Temperature uniformity: Temperature uniformity directly affects the consistency of product quality. For high-precision silicon carbide products, such as silicon carbide substrates for semiconductors, the temperature uniformity of the reaction sintering furnace is required to be controlled within ±5°C.

Heating rate: Some silicon carbide preparation processes require rapid heating to improve production efficiency or control the reaction process. If the temperature needs to be raised from room temperature to 1800°C in a short time during production, a reaction sintering furnace with a fast heating rate needs to be selected.

Atmosphere control: According to the reaction process, a reaction sintering furnace with precise atmosphere control function is selected, which can accurately control the flow, pressure and proportion of gases such as argon and nitrogen in the furnace.

3. Equipment quality

Brand and reputation: Choose a reaction sintering furnace manufacturer with good reputation and brand awareness in the market. KJ Technology is a global leader in vacuum furnace equipment with rich R&D and production experience. We have a professional technical team to support. Give customers worry-free protection.

Materials and accessories: The furnace material should have the characteristics of high temperature resistance, corrosion resistance, and good thermal insulation performance, such as the selection of high-quality materials such as boron nitride and silicon carbide ceramic fiber; the heating elements should choose high temperature resistant and long-life molybdenum wire, silicon carbon rod, etc.; key accessories such as temperature sensors and controllers should use well-known brand products to ensure the reliability and stability of the equipment.

Manufacturing process: The excellent manufacturing process of KJ vacuum furnace can ensure the quality and performance of the reaction sintering furnace. Check whether the welding process of the equipment is firm, whether the sealing performance is good, whether the electrical wiring is standardized, etc.

4. After-sales service

Installation and commissioning: KJ Vacuum Furnace Company provides professional installation and commissioning services to ensure that the reaction sintering furnace can be smoothly installed and operate normally at the user's site.

Training support: Provide comprehensive training for users' operation and maintenance personnel, including equipment operation methods, maintenance points, common troubleshooting, etc.

Maintenance: A complete after-sales service system includes timely maintenance response and long-term equipment maintenance services. Understand the strength of the manufacturer's maintenance service team, the supply of accessories, and the warranty period, etc.

5. Price and cost

Equipment price: On the premise of meeting production needs and technical requirements, KJ's reaction sintering furnace has a better cost performance. Energy saving and environmental protection, high output efficiency.

Operation cost: Consider the energy consumption of the reaction sintering furnace, the cost of replacing wearing parts, maintenance and other operating cost factors. For example, the use of an efficient and energy-saving heating system can reduce energy consumption costs, and the selection of equipment with low wearing parts prices and easy replacement can reduce maintenance costs.