Abstract: We in the use of round blades and blades must play a role in the heat treatment today we will understand them out of the method and characteristics: normalization processing: normalization heat treatment has two important functions, one is to make the workpiece crystal particles fine and improve the mechanical properties of materials; Another purpose is to adjust the size or distribution of carbides in rolled or forged tissue, so that carbides can be easily dissolved in the material during subsequent heat treatment, so as to promote the machinability of the material and make the material average. The heat treatment procedure of normalized heat treatment is to heat the workpiece to a temperature of 30℃ to 60℃ above A3 (subeutectoid steel) or Acm (hypereutectoid steel) point (this is the normalized temperature) for a period of time. After the material becomes the average Worth field body, it is placed in the air for cooling. For the estimation of normalization time, the temperature holding time can be estimated at 30 minutes per 25mm thickness. Normalized heat treatment can be divided into two normalization, constant temperature normalization and secondary normalization. Quenching treatment: the main purpose of quenching treatment is to cool the steel rapidly in order to obtain the maximum hardness of the machan granular structure.

We are sure to play a role in the use of round blades and blades to understand the heat treatment today we will understand their out methods and characteristics: normalization processing: normalization heat treatment has two important functions, one is to make the workpiece crystal particles fine and improve the mechanical properties of materials; Another purpose is to adjust the size or distribution of carbides in rolled or forged tissue, so that carbides can be easily dissolved in the material during subsequent heat treatment, so as to promote the machinability of the material and make the material average. The heat treatment procedure of normalized heat treatment is to heat the workpiece to a temperature of 30℃ to 60℃ above A3 (subeutectoid steel) or Acm (hypereutectoid steel) point (this is the normalized temperature) for a period of time. After the material becomes the average Worth field body, it is placed in the air for cooling. For the estimation of normalization time, the temperature holding time can be estimated at 30 minutes per 25mm thickness. Normalized heat treatment can be divided into two normalization, constant temperature normalization and secondary normalization. Quenching treatment: the main purpose of quenching treatment is to cool the steel rapidly in order to obtain the maximum hardness of the machan granular structure.

Enterprisesin slitting machine blade force annealing treatment: chi annealing heat treatment is the main purpose, is the removal of casting, forging, machining or welding residual stress, the residual stress, often results in the decrease of strength of artifacts and deformation, and have a bad effect on the material toughness, ductility, so the chi force annealing heat treatment for strict size longitude artifacts, there are security concerns of mechanical components is very important. The process of relaxation annealing is to heat the workpiece to an appropriate temperature below A1 and then cool it slowly to room temperature after holding it for a period of time (not as long as softening annealing treatment). What needs to be noticed in particular is that the speed of heating should be slow, especially for large objects or workpiece with complex shape, otherwise the effect of relaxation annealing will be greatly compromised.

Softening annealing treatment: The heat treatment procedure of softening annealing treatment is to heat the workpiece to the range of 600℃ to 650℃ (below A1 temperature) and maintain air cooling after a period of time. Its main purpose is to make the workpiece hardened by processing soften again and return to its original toughness, so that it can be further processed. This kind of heat treatment method is often repeated in the cold working process, so it is also called process annealing. After cold processing, the strength and hardness of large metals will increase with the increasing amount of processing, which also leads to the decrease of ductility of materials and the material becoming brittle. If further processing is needed, softening annealing heat treatment must be carried out first before processing can be inherited.

Spheroidizing annealing treatment: The main purpose of spheroidizing annealing is to improve the cutting function and machining plasticity of steel materials by making the layered or reticulated carbides solidify into balls through heat treatment, especially for high-carbon tool steels. Common spheroidizing annealing treatment includes :(1) repeatedly heating and cooling the steel A1 temperature above and below for several times, so that the anomalous precipitation of snow carbon iron from A1 is inherited and attached to the spheroidized carbide; (2) Heat the steel above A3 or Acm temperature until the carbide is completely dissolved in The Worth field and then quench, and then spheroidized in accordance with the above method. The spheroidization of carbide can increase the toughness of the steel after quenching, prevent the cracking, improve the mechanical properties of the steel after quenching and tempering, and improve the service life of the steel. Completely annealing treatment: completely annealing treatment to Ac3 hypoeutectoid steel heating temperature more than 30 ~ 50 ℃, hypereutectoid steel heating to Ac1 temperatures above 50 ℃ temperature range, the temperature keep enough time, become a single-phase austenitic body tissues (hypoeutectoid steel) or austenitic body plus xue Ming carbon body after hybrid organization, in the furnace cooling to soften steel, in order to get the ductility of * * * * and fine grain steel group. Homogenization annealing (hereinafter referred to as Homogenization), it is also known as "Homogenization annealing", which takes advantage of long heating at high temperature to make internal chemical composition fully diffused. The heating temperature varies depending on the type of steel. Large ingots are usually homogenized between 1200℃ and 1300℃, high carbon steel between 1100℃ and 1200℃, and generally cast or rolled steel between 1000℃ and 1200℃.