What problems should be paid attention to when cutting materials by forging saw: the reaction container is important to provide a stable space so that the material may stop physical and chemical reactions. The heat exchange container is mainly used to stop the alternating heat work of materials and play a stable heat dissipation role. Separate containers, through special structures and processing methods, stop the operation of gaseous, solid and liquid materials and play the role of cutting off exchange.

1. Active feeding can be single-pass or multi-pass;

2, digital feed reader;

3. Active piece counting;

4, cemented carbide guide assembly;

5, the productivity is high, which is 1.5~2 times that of the popular disc sawing machine;

6, the feeding force can be constant within the preselected range;

7. Hydraulic tension saw belt;

8, adjust;

9, automatically stop no material and saw blade fracture, to achieve the number of reserved saws.

Purpose and requirements of heating aluminum alloy forgings

Heating before forging is an indispensable and important link in the whole forging process, which has a direct impact on improving forging productivity, ensuring forging quality, saving energy consumption and reducing product cost. The purpose and requirements of forging heating are as follows:

1, heating purposes

Improve metal plasticity, reduce metal deformation resistance, make it easy to form, and obtain good microstructure and mechanical properties after forging.

2, heating requirements

1, heating to a predetermined temperature as soon as possible under the conditions of allowable thermal conductivity and internal stress of metal materials, improving efficiency and saving energy;

2. Minimize the absorption of harmful gases such as oxygen, hydrogen and nitrogen, reduce defects such as oxidation, decarbonization or hydrogen embrittlement, and improve the heating quality;

3. In the low-temperature heating stage, it should be prevented that the temperature difference between the outer layer of the metal section and the heart is too large, which leads to excessive thermal stress, and then other internal stresses are superimposed, which leads to material fracture;

4, accurately implement the given heating specifications, such as heating temperature, speed, time, heat preservation and other heating conditions to prevent overheating, overheating and other defects.

The difference between forging, stamping and casting

First, the difference between forging and casting

1, conceptual differences

(1) Casting: changing the intangible molten metal into a tangible solid.

(2) for: changing a solid of one shape into a solid of another shape.

Casting is like playing with wax. You buy wax (scrap steel or pig iron), then turn it into liquid and add it to some molds, so that you can get things with different shapes. (solid-liquid-solid)

Forging is like the process of making bread. You knead the dough and put it in a mold to make products of different shapes. Almost solids can be changed into other shapes (solid to solid) at high temperature.

⑤ The so-called casting is the process of casting molten metal into a mold to obtain a casting. Casting focuses on the process control of metal melting and casting.

Forging is a solid forming, which can be divided into hot working and cold working, such as extrusion, drawing, pier thickness and punching.

2. Forging is slow forming and casting is one-step forming.

(1) casting: filling the cavity with molten metal and cooling. Air holes are easily generated in the middle of parts.

② Forging: mainly extrusion molding at high temperature. It can refine the grains in parts.

Second, the difference between free forging and die forging

Free forging is a processing method that the heated metal blank is placed on forging equipment, and an impact force or pressure is applied between iron to directly plastically deform the blank, so as to obtain the required forgings. Because of its simple shape and flexible operation, free forging is suitable for the production of single piece, small batch and heavy forgings. Free forging includes manual free forging and machine free forging. Manual free forging has low productivity and high labor intensity. It is only used for repairing or producing simple and small-batch forgings. In modern industrial production, machine free forging has become the main method of forging production and plays a particularly important role in heavy machinery manufacturing.

The full name of die forging is die forging, and the heated blank is placed in a forging die fixed on die forging equipment for forging. Die forging can be carried out on various equipment. In industrial production, steam-air hammer is mainly used for die forging on the hammer, with a tonnage of 5kn~300kn(0.5~30t). Hot die forging press is often used for die forging on the press, with a tonnage of 25,000 kn ~ 63,000 kn.

The forging structure of die forging includes single die forging and multi-die forging. Fix the forging die with dovetail groove and inclined wedge to prevent falling and moving left and right; Through the cooperation of key and keyway, the forging die is accurately positioned to prevent back and forth movement. A single die is usually the final forging die. In the forging process, it is usually necessary to hammer the blank with air, and then it is formed by hammering the final forging die many times, taking out the forging and cutting off the flash.

Third, the difference between casting, forging, stamping and die casting

1. Casting is to melt raw materials and make them naturally shape in a molding die;

2. Forging is to heat raw materials to a certain temperature and then forge them with tools;

3. Stamping is to punch raw materials with a suitable stamping die;

4. Die-casting is to inject molten raw materials into the mold on the basis of casting, so that it can obtain higher density or more shape;

5. Casting: the cavity is filled with molten metal and cooled. Air holes are easily generated in the middle of parts.

6. Forging: it is mainly extrusion molding at high temperature, which can refine the grains in the parts.

7. The thickness of parts is basically suitable for stamping of sheet metal forming.

8. The thickness of the parts is different, the shape is complex, and they are not heated, so die casting is used.

Casting is divided into two types: high pressure casting and low pressure casting. Simply put, after the metal melts, the pressure is different, and the temperature of heating the metal is different from that of the casting machine.

Forging is also a casting method, the difference is that the forging temperature is low, and some can make metal into finished products in semi-molten state.

Stamping is the process of making semi-finished products into finished products at room temperature with machines such as punching machines.

Die casting is also a way of high temperature casting. When a casting with complex structure and great difficulty is encountered, a die casting machine can be used to heat the metal into liquid, press it into the mold, and open the mold after cooling to take out the product.

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