Cryogenic Furnace
Cryogenic treatment involves utilizing liquid nitrogen (-196°C) as a cooling medium to extend the cooling process of quenched metal materials. By reaching temperatures significantly below ambient conditions, this process facilitates the further transformation of residual austenite—which typically remains after conventional heat treatment—into martensite. Since martensite serves to harden strengthen steel, this transformation ultimately leads to enhanced performance in the metal materials. Following cryogenic treatment, metal tools exhibit marked improvements in wear resistance, toughness, dimensional stability, thereby multiplying the service life of the workpieces.
Cryogenic Furnace Models:
Cryogenic Furnace Product Features:
The chamber body, door, insulation layer are constructed AISI 304 stainless steel; the insulation layer features a multi-layer composite structure utilizing imported ultra-low-temperature thermal insulation materials.
It employs a dual-channel sealing system made of imported, specialized low-temperature-resistant silicone rubber, paired with custom-designed door latches to ensure a completely airtight seal. The chamber body has undergone structural reinforcement to reliably support the weight of the workpieces.
A specialized internal design ensures unobstructed airflow within the chamber, thereby guaranteeing temperature uniformity throughout the interior. The chamber lid is equipped with gas-assisted springs to facilitate easy opening secure support.
The unit is equipped with electrical interlocks alarm systems to ensure operational safety, while a user-friendly microprocessor-based interface simplifies operation for the user.
Technical Specifications:
Operating Temperature: Ambient to -190°C (freely adjustable);
Minimum Internal Temperature: -195°C;
Cooling Rate: 20°C/min;
Temperature Control Accuracy (Heating, Cooling, Constant Temperature): ±1°C;
Temperature Field Uniformity: ±5°C;
Door Opening Direction: Upward-lifting (Pneumatic cylinder-assisted opening geared motor options available for user selection)
The beneficial effect of cryogenic furnace technology lies in its ability to penetrate the interior of the treated component (a "bulk effect"). Because its influence is confined solely to the surface, the performance-enhancing modifications to cutting tools remain intact even after they undergo regrinding for reuse. Furthermore, this process causes no alteration to the workpiece's shape dimensions; on the contrary, it serves to enhance dimensional stability reduce residual stresses induced by quenching. The process system is simple, energy-efficient, unconstrained by the shape size of the workpiece, making it easy to operate. Moreover, it generates absolutely no environmental pollution, establishing it as a safe eco-friendly technology. Since its inception, cryogenic technology has garnered significant attention both the scientific research community the industrial sector. Internationally, it has already been successfully applied to the modification of cutting tools, measuring instruments, molds, various precision components—such as fuel injector nozzles, engine turbine shafts, rolling mill rolls, valves, gears, springs. The application of cryogenic modification technology is progressively gaining widespread recognition within the corporate sector is experiencing rapid growth. Current experimental results demonstrated achievements indicate that cryogenic modification technology offers valuable applications in the following areas:
1. Extending the service life of high-speed steel cutting tools, edged instruments, measuring instruments;
2. Extending the service life of cemented carbide cutting tools edged instruments;
3. Extending the service life of cemented carbide drill bits drilling tools;
4. Improving the performance of diamond-based products—specifically, enhancing the thermal stability of synthetic diamonds, boosting the performance of products such as synthetic diamond mining drill bits 105mm-diameter diamond saw blades;
5. Improving the performance of anvils used in diamond hot-pressing machines;
6. Ensuring the dimensional stability of assembly components within precision machinery;
7. Enhancing the performance characteristics of carbon fibers;
8. Extending the service life of fuel injector nozzles, springs, gears, bearings;
9. Extending the service life of hot-working cold-working molds utilized in the mechanical manufacturing industry.
