املاح المعالجة الحرارية للحديد وسبائكة ملح GK 670 مدى تشغيل حتى 1060 درجة مئوية
GK670 Heat Treatment Salt
GK670 is a neutral heat treatment salt bath used primarily for hardening and tempering gears and other iron parts. It is designed to operate in a high temperature range, specifically from 670°C to 1060°C (1238°F to 1940°F). This salt is composed of a mixture of various inorganic salts which give it specific properties suitable for high-temperature applications.
GK670 Salt Operating Range
The GK670 heat treatment salt is designed to operate effectively in a broad temperature range, from 670°C to 1060°C (1238°F to 1940°F). This wide range makes it suitable for various metallurgical processes, including both tempering and high-temperature hardening of steel.
Key Features & Benefits
High Thermal Stability: The salt bath remains stable and maintains its chemical composition at high temperatures, ensuring consistent and repeatable results during the hardening process.
Uniform Heating: The molten salt provides excellent heat transfer, allowing for uniform and rapid heating of the workpiece. This minimizes thermal shock and reduces the risk of part distortion or cracking.
Reduced Scaling and Decarburization: The molten salt acts as a protective layer, preventing the iron surface from reacting with oxygen. This significantly reduces scaling (oxidation) and decarburization (loss of carbon from the surface), resulting in a cleaner, harder surface finish.
Improved Hardness: Using a salt bath ensures that the entire surface of the part, including complex geometries and internal surfaces, is uniformly heated, leading to a consistent and high-quality hardening of the material.
Ease of Quenching: After the heating process, the part can be quenched directly from the salt bath into a quenching medium (like oil or water), a process often preferred for specific types of steel to achieve desired hardness without excessive distortion.
Applications
GK670 is a versatile salt bath used in the heat treatment of various steel grades, especially those used for high-performance applications. Its primary uses include:
Hardening of Gears:
It is widely used in the automotive and machinery industries for hardening gears, which require high surface hardness and wear resistance.
Heat Treatment of Tools and Dies: Used for hardening tools, dies, and other components that are subjected to high mechanical stress and require exceptional durability.
General Hardening of Iron Parts: Suitable for a wide range of iron and steel parts that require through-hardening or case hardening.
Handling and Safety Precautions
Protective Gear: Always handle the salt and operate the furnace with appropriate personal protective equipment (PPE), including heat-resistant gloves, a face shield, and a fireproof apron.
Moisture Control: The salt is highly hygroscopic and must be stored in a dry place. The presence of moisture can cause the molten salt to violently spatter when heated.
Ventilation: The process should be carried out in a well-ventilated area to dissipate any fumes that may be generated.
Disposal: The disposal of spent salt and sludge must comply with local environmental regulations.
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