2023/11/14
4 steps to mass-produce heat treatment fixtures
Heat treatment fixtures are tools used to fix, place, and support metal parts during the heat treatment process. They can improve the efficiency and quality of the heat treatment process. Foundry plants produce heat treatment fixtures with trays, supports, pads, cages, and circulating fans.
The production steps are roughly as follows:
precision castingProcess
Design heat treatment fixture
Based on the shape, size, weight, material, and heat treatment requirements of the heat treatment fixture, the appropriate casting structure and dimensions of the heat treatment fixture are designed, and the appropriate heat-resistant alloy material is selected, such as heat-resistant steel and super alloys.
Castings for heat treatment equipment
Design and manufacture molds using molds. Appropriate mold design and manufacturing are carried out based on the structural form, material, and molding method of the heat treatment fixture.
Molding and casting of heat treatment fixtures
Usually, the heat treatment fixture is produced by sand casting. It starts with mold making → selection of alloy material → melting → casting → disassembly → cleaning sand → cutting and grinding, to complete the production of the heat treatment fixture’s castings.
Heat treatment fixture inspection
For heat treatment fixtures, visual quality, dimensions, and assembly are inspected. If special requirements are required, a standard (high) temperature tensile test can be conducted using samples to ensure that they meet specifications and standards and are able to withstand high temperatures and weight loads.
Ensuring the quality and testing methods of heat treatment fixtures
Heat treatment fixture
It refers to the tools used to fix, position, and support heat-treated workpieces during the heat treatment process. The quality of heat treatment equipment directly affects the heat treatment effect and lifespan of the workpieces, thus requiring strict control and inspection.
Choose the appropriate heat treatment fixture material
The materials used in heat treatment fixtures should have good heat resistance, corrosion resistance, high (normal) temperature strength, and toughness. Commonly used heat treatment fixture materials include heat-resistant steel, stainless steel, and nickel-based alloys.
Design rational heat treatment fixture structure
The structure of heat treatment fixtures should be as simple, sturdy, and lightweight as possible, and should ensure uniform heating and cooling of the workpiece to reduce deformation and cracking. The structure of heat treatment fixtures should also take into account factors such as thermal expansion and contraction, oxidation and decarburization, and airflow; the pallet is usually constructed with a frame structure to maintain uniform distribution and circulation of the heat air.
Strictly implement the regulations for the manufacture and use of heat treatment fixtures
The manufacturing process of heat treatment tools should be carried out in accordance with the drawing specifications and relevant standards to ensure their performance and durability. The use of heat treatment tools should be carried out in accordance with operating procedures and undergo regular cleaning, maintenance, and replacement to prevent contamination and damage.
The implementation of effective testing and evaluation methods for heat treatment treatment
Implement effective methods for testing and evaluating heat-treated tools. The methods for testing and evaluating heat-treated tools mainly include visual inspection, dimensional measurement, hardness testing, metallographic analysis, and non-destructive testing. These methods can help identify defects and issues in heat-treated tools and provide the basis for improvement and optimization.
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