Year1
- 产品规格：
- 齐全
The heat treatment hardness of the material is a high carbon and high chromium alloy tool steel. After heat treatment, it has high hardness and abrasion resistance, strong hardenability and good dimensional stability. It is suitable for making high-precision and long-life cold work. Molds and thermoset plastic molds.
Characteristics: It has good toughness and high temperature fatigue resistance. It can withstand temperature fusion and is suitable for long-term work at high temperatures. It has good cutting performance and polishing performance
Application introduction
The thickness is no larger than that of thin plate, high efficiency Blanking die. Stamping dies and impression dies, various scissors, inlaid blades, woodworking blade thread rolling dies and wear-resistant slider cold heading dies, thermosetting resin molding dies, advanced gauges and other deep drawing and cold extrusion dies.
How to use
.Use in the quenching + tempering state
.Use in the quenching + cold treatment + tempering state (suitable for high precision and dimensional stability requirements)
.Quenching + tempering Used under fire + nitriding treatment (suitable for high surface hardness requirements)
. Cryogenic treatment In order to obtain the highest hardness and dimensional stability, the mold is cryogenically cooled to ℃ immediately after quenching, kept for an hour, and then tempered. , the hardness of cryogenically treated tools or molds is higher than that of conventional heat treatment. For parts with complex shapes and large changes in size, there is a risk of cracking during cryogenic treatment.
. Nitriding treatment After nitriding treatment of the mold or workpiece, a layer of hardened structure with high hardness and certain corrosion resistance is formed on the surface.
. During nitriding treatment at ℃, the surface hardness of the workpiece is about 100%. The effect of nitriding time on the nitrided layer is as shown in the table below. Nitriding time (hours) Nitriding layer depth. .
.At ℃ soft nitriding treatment, the surface hardness of the workpiece is approximately. Usually, if the soft nitriding treatment is small, the depth of the hardened layer can reach 100%. Grinding the mold base or working in a low-temperature tempering state is prone to grinding cracking. In order to prevent the occurrence of cracks, small grinding feeds should be used for multiple grinding times, and good water cooling conditions should be added.
When wire cutting molds with complex shapes or large sizes are finally processed in rows, cracking will usually occur.
In order to prevent cracking, it is recommended to use gas quenching and high-temperature tempering to reduce heat treatment stress, or to perform cavity preprocessing on the mold base.
Material properties
It is a Japanese standard brand, which is wear-resistant, tough, cold-worked die steel, carbon-chromium alloy tool steel and vacuum de-refined steel. The steel is pure and has hardenability. Good quenching deformation and good hardenability. This steel has been processed by spheroidizing, degenerating and softening. It has good hardenability and the carbide particles are fine and uniform. It has to bear the special addition of molybdenum and vanadium, which are strengthening elements for quenching and cracking. ? Hardness, ? Wear-resistant eutectic carbide is uniform, tough, not easy to crack, hardness after quenching.
Nitridation treatment at ℃, the time is/depth of ammoniated layer. ,?Part table?Hardness Nitridation treatment at ℃, time is.Nitride layer depth~,?Part table?Hardness
Chemical composition< br/> .
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Heat treatment
Quenching: first preheat ~℃, then heat to ~℃ in still air Medium cooling, if the thickness of the steel tool is more than 10 inches, heat it to ~℃, it is better to quench in oil, heat it to ~℃, stay at this temperature, and then cool it in still air and heat it to ~℃, where The temperature remains for ~ hours and allowed to cool down in the furnace. Forged ~ ℃.
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