Powder metallurgy cemented carbide Pressure Sintering Furnace 6MPA 1600℃

Powder metallurgy cemented carbide Gas Pressure Sintering Furnace 6MPA 1600℃

  Zhuzhou Ruideer Intelligent Thermal Equipment Co.,Ltd located in Ruideer Technology Park,Tianyuan District,Zhuzhou Hunan Province,founded in 2011,covering an area of more than 19,000 square meters.

   At present,Ruideer has developed two core technologies of “high temperature &high pressure”and “chemical vapor deposition” with supplying vacuum sintering furnaceand CVD coating furnace.

   Our main products including:GPS furnace,MIM vacuum sintering furnace,ceramic silicon carbide/nitride sintering furnace,silicon carbide coating furnace,cemented carbide cutting tool CVD coating furnace and the turnkey solution for the cemented carbide cutting tool(From RDP powder,press machine,sinter furnace,cuuting machine,laser machine,metalgraphic testing instruments,sandblasting matchine,ultrosonic cleaning machine to CVD coating furnace).

   The Gas Pressure Sintering Furnace(GPS furnace) has been awarded National Manufacturing Champion Product,widily used in cemented carbide,non-cermets,semiconductor,aerospace,automobile manufacturing,weapons and other fields,exported to the US,Russia,Japan,EU,Ukraine,South Korea,Vietnam and other countries,which making Ruideer a well-known brand in the industry.

     Powder metallurgy is a process that uses metal powders (or mixtures of metal and non-metal powders) as raw materials to manufacture metallic materials, composite materials, and various types of products through forming and sintering. Because powder metallurgy shares similarities with ceramic production, it is also called the cermet method.

    Sintering is a key process in powder metallurgy. After forming, the pressed blank or billet achieves the desired physical and mechanical properties through sintering. Sintering is divided into single-system sintering and multi-system sintering. In solid-phase sintering, whether single-system or multi-system, the sintering temperature is lower than the melting point of the contained metals and alloys; while in liquid-phase sintering of multi-systems, the sintering temperature is lower than the melting point of the refractory components but higher than the melting point of the fusible components. Generally, sintering is carried out under a protective atmosphere. Besides ordinary sintering methods, there are also loose-pack sintering, melt infiltration (infiltrating metal into the sintering framework), and hot pressing (combining pressing and sintering).

The main parameters for the equipment:

Problems in the sintering process of cemented carbide tools.

1. Excessive carbon in the alloy, i.e. the cobalt magnetism of the mixture itself is high or even carburized, carbon in carbon paper is absorbed, residual paraffin is cracked, and the insulation layer absorbs paraffin, resulting in a high concentration of carbon atmosphere, etc.

2. Insufficient carbon in the alloy, i.e. the cobalt magnetism of the mixture itself is low, the pressed product is stored for too long, the furnace leaks, the contact material is used incorrectly, etc.

3. High concentration of carbon-containing gas enters the weak parts of the product (the edges and corners of the product are often low in density or have severe elastic aftereffect), and under the contact of cobalt, a carbon precipitation reaction occurs. The precipitated carbon destroys the continuity of the alloy, causing the alloy to "peel"

4. The density of the pressed product is uneven; the carbon content in different parts of the sintered body is different; the boat is uneven, the sintering atmosphere is uneven, and the sintering temperature is uneven

5. Overburning - the sintering temperature is too high; there are oxides in the pressed green sheet that are difficult to reduce, and they can only be reduced at a higher temperature after the liquid phase appears. The pressure of the gas generated by the reduction is greater than the resistance of the liquid phase contraction; the debris in the pressed green sheet, such as alloy debris, iron filings, copper wire, etc.

6. The gas generated by the reduction of oxide impurities at high temperature or the furnace gas entering the sintered body, when the alloy solidifies, it does not have time to escape, and it is dispersed and remains in the alloy, and the pressure of the gas is not enough to form bubbles and become holes

7. The gas generated by the reduction of oxide impurities at high temperature or the furnace gas entering the sintered body, when the alloy solidifies, it does not have time to escape, and it is dispersed and remains in the alloy, and the pressure of the gas is not enough to form bubbles and become holes.

More about differences between Sinter HIP Furnace and Gas Pressure Sintering Furnace

Main functions description:

• Automatic leak detection of positive and negative pressure before opening the furnace;
• Ar carrier gas differential pressure dewaxing function;
• Ar carrier gas differential pressure dewaxing function;
• H2 micro positive dewaxing function;
• Vacuum sintering function;
• Partial sintering function;
• Static partial pressure sintering function;
• Dynamic partial pressure sintering function;
• Gas atmosphere product processing function;
• Pressure sintering function;
• Pressure sintering function;
• Fully automatic control function;
• Safety interlock function;
• Break point reheating function;
• Wireless remote diagnosis function;

Equipment strengths:

• The equipment has the function of continuous heating at break point, automatic dewaxing function, wireless remote diagnosis function, and low temperature test function;
• The equipment vacuum main pipeline and dewaxing system are equipped with filters (patented products) to prevent dust and impurities from polluting the pump oil, and extend the oil change time and the service life of the pump unit.
• Convenient and intelligent: The control interface of the sintering furnace can be monitored through the mobile phone, and the operation status of the equipment can be controlled and understood anytime and anywhere. Fully automatic one-key operation function, one person can supervise multiple devices, intelligent production, and can be connected to ERP management system.
• Complete after-sales service system: provide 7×24 hours telephone hotline. After receiving the customer's fault notification, a solution will be proposed within 2 hours, and if it is urgent case which needs on site maintenance, technical crew will arrive within 12 hours after boarding the plane. With experienced professional after-sales service personnel, they are not only responsible for the installation and commissioning of the company's products, but also complete the after-sales and maintenance of sintering furnaces for both domestic and foreign manufacturers.
• Convenient service: Users can test products at the site of Ruideer if they have needs. The company's production site has conditions for hot pressurization.
• Quick installation: Under the condition that the user's water, electricity, and gas are in place, installation, debugging, and production can be completed within 20 days.
• Company testing equipment: In order to ensure the quality of the products, Ruideer is equipped with imported helium mass spectrometer leak detectors, which are used to test the sealing surfaces of the equipment before leaving the factory to prevent small leaks and achieve a perfect sealing state. At the same time, it is also equipped with cobalt magnetometer and coercivity magnetometer professional precision testing equipment (currently the sintering furnace equipment manufacturer, only equipped by Ruideer), to meet customers' rapid pre-acceptance at the production site, and to control the sintered furnace The sample block is tested, and the performance results of the furnace control plate sample block can be tested in time, and the detection level has reached the standard of a small and medium-sized alloy factory.

Documents of Equipment and Technical Files

• Operation and Maintenance Manual (O&M)
• The installation
• Equipment Layout
• The whole equipment installation manual, equipment installation drawing and requirements for water, electricity and gas.
• The external conditions (water, electricity and gas) required for installation of the sintering furnace shall be provided by the buyer according to the requirements of the supplier.
• Mechanical drawings
• Drawings of fragile parts of equipment
• Electrical Schematic Diagram

Buyer’s Preparation

• Prepared by the buyer before installation:
• Services required for hoisting and unloading sintering furnace equipment in place.
• The connection of the power supply to the connection point outside the power cabinet.
• The cooling water main inlet and return pipes connected to the equipment, various process gas pipes, compressed air and high-pressure argon supply pipes, high-pressure gas exhaust pipes, pump exhaust gas discharge pipes, etc.
• Supply and storage of pressurized gas and reduce the pressure of pressurized gas to the corresponding pressure range, the required equipment and the pressure reducing valve of each process gas.
• If necessary, measure the pollution of the pressurized gas.
• Emergency water supply device when cooling water is interrupted.
• The seller only provides certification materials for the production of pressure vessels in China. If other certifications are involved, the buyer shall bear the cost.
• The working medium, process materials and other related matters required for acceptance.
• Other unmentioned matters, which are not included in the scope of supply, shall be prepared by the buyer.

Design standards

    The equipment is designed in accordance with the pressure vessel requirements of the Quality and Technical Supervision Bureau, and is qualified after pressure testing and shipped. The electrical design and construction meet national standards.

Horizontal and vertical options are available:

 Installation pre-test and pre-acceptance

   The equipment is fully assembled in our factory, including all pipelines, vacuum pipelines, process gas pipelines, cooling water pipelines, compressed air pipelines, etc. Pre-testing can be carried out after installation. At the customer site, pipelines other than the equipment are provided by the customer. The installation also includes the connection of all cables. At the customer site, the main cable connecting the power cabinet is provided by the customer. After installation, we conduct vacuum and positive pressure leakage tests on the entire equipment, as well as mechanical and electrical function tests.

Disassembly and transportation

The equipment will be disassembled in several large parts, packed in a standardized wooden cases, and loaded into the transport vehicle.

Customer site installation and commissioning

    The Redeer after-sales engineer will lead the team to complete commissioning, product trial burning and other work within 20 working days. The customer needs to make appropriate preparations and provide the necessary tools, such as hoisting and lifting equipment. And provide installation personnel support (it is recommended to have 1 mechanical personnel and 1 electrical personnel).

Final acceptance

  After installation and commissioning, the equipment can be finally accepted in accordance with the requirements of the technical contract.

Training

Our after-sales engineers will provide a systematic and complete on-site training, including operation, maintenance, troubleshooting, etc.

Technical data delivery

To ensure safe operation and equipment maintenance, the following technical data will be provided to customers:

1. Equipment installation layout

2. User manual

3. Spare parts list

4. Electrical drawings

5.  Component manual

FAQ

Q: Are you a factory or trading company?

A:We are China leading high-temperature vacuum furnace manufacturer with over 15 years’ experience.

Q: Do you have customization or OEM service?

A:Yes,we have powerful R&D team and high-tech equipment.So we can not only supply the regular model,but also the customizable furnace as the repuirment of our clients.

What's your advantage?

Q:What's your advantage?

A:

l Quick response to your enquiry

l High quality control

l Stable supply chain

l Timely delivery

l Excellent after-sales service