What is a special processing technology?

Question 1: What is special treatment? What are its characteristics? Special machining is a method to remove redundant materials from blanks or workpieces by using electric energy, electrochemical energy, optical energy, acoustic energy or a combination of them. Special treatment has the following characteristics:

(1) The hardness of the tool used for machining need not be greater than that of the material to be machined;

(2) There is no obvious mechanical cutting force between the tool and the workpiece during machining.

Question 2: Special processing technology. What is a special processing technology? Special processing refers to a processing method that does not belong to the traditional processing technology. It is different from the traditional machining methods that directly use mechanical energy to remove redundant materials, such as tools and abrasives. Special machining is a new technology developed in recent decades, which is an important supplement and development to traditional machining methods, and it is still under research, development and perfection. Electrical energy, thermal energy, acoustic energy, optical energy, chemical energy and electrochemical energy are directly used to process workpieces, and sometimes mechanical energy is combined. EDM and ECM mainly use electric energy, which are widely used in special machining, and are generally called electro-machining.

EDM, invented in the 1940s, pioneered the method of machining hard workpieces with soft tools without mechanical force. After 1950s, electron beam machining, plasma arc machining and laser machining appeared one after another. These processing methods do not use molding tools, but use high-density energy beams for processing. For high-hardness materials and special parts with complex shapes and fine precision, special machining has great applicability and development potential, and has been more and more widely used in the manufacture of molds, measuring tools, tools, instruments and meters, aircraft, spacecraft and microelectronic components.

The development direction of special machining is mainly: improving machining accuracy and surface quality, improving productivity and automation, developing compound machining combining several methods and developing nano-scale ultra-precision machining.

Question 3: What kinds of machining are special, such as EDM, WEDM, electrolytic machining, ultrasonic machining, laser machining, electron beam machining, ion beam machining, spraying machining, chemical machining, etc.

Question 4: What are the main special processing methods? 1, wire cutting; 2. Electric spark; 3. Laser cutting; 4, plasma cutting; 5. Electrochemical machining; 6, ultrasonic treatment; 7. Electron beam processing; 8, 3D printing; There are other ways, so I won't go into them.

Question 5: What is special processing and what are its characteristics? Special machining is a process method that uses electric energy, thermal energy, acoustic energy, optical energy, electrochemical energy and special mechanical energy to directly remove materials. Has the following characteristics:

1) The processing range is not limited by the mechanical properties of materials, and it can process any hard, soft, brittle, heat-resistant or high-melting metal and nonmetallic materials.

2) It is easy to process various complex surfaces, fine surfaces and flexible parts.

3) Good surface quality can be obtained. 4) Various processing methods are easy to combine to form a new technology, which is convenient for popularization and application.

Question 6: What is special treatment? Compared with special processing methods, it has many unique features: special processing.

The processing range of (1) is not limited by the physical and mechanical properties of the material, [1] can process any hard, soft, brittle, heat-resistant or high-melting metal and nonmetallic materials. (2) It is easy to process complex surfaces, fine surfaces and flexible parts. (3) It is easy to obtain good surface quality, and the thermal stress, residual stress, cold work hardening and heat affected zone are relatively small. (4) Various processing methods are easy to combine to form a new processing method, which is convenient for popularization and application.

Question 7: Several methods of special processing 1 Introduction to characteristics and classification of special processing 1. 1 Special processing and characteristics Special processing refers to the processing methods using electric energy, thermal energy, optical energy, chemical energy and acoustic energy. It is mainly used to process difficult-to-cut materials such as high strength, high hardness, high toughness, high brittleness, high temperature resistance and magnetic resistance, as well as precise and complex parts. Compared with traditional cutting technology, special machining has the following characteristics: (1) Metal is not cut by mechanical force or mechanical energy, but directly removed by electric energy, light energy, sound energy or a combination of several energies. (2) Strong adaptability, wide processing range, generally not limited by the mechanical and physical properties of workpiece materials, and can process any hard, brittle, heat-sensitive, corrosion-resistant, high melting point, high hardness, high strength and special performance metal and nonmetal materials. (3) The machining mechanism is different from general metal cutting, which does not produce macroscopic cutting and strong elastic-plastic deformation of metal, so it can obtain very low surface roughness and dimensional accuracy. (4) It is flexible and has no obvious mechanical force during processing. Most special machining does not need a tool, even if a tool is used, it does not directly contact with the workpiece and hardly bears the machining force, so it can process hard and brittle materials, and even the hardness of the tool material can be lower than that of the workpiece material. (5) Energy conversion or combination can be realized in the machining process, which is convenient for control and operation automation, and is suitable for machining two-dimensional or three-dimensional complex curved surfaces, micro-curved surfaces, micropores, narrow seams and low-rigidity parts. 1.2 classification of special processing Special processing is classified according to the form of energy used, and is classified by

Question 8: Characteristics of Special Machining 10 Special machining, also known as "non-traditional machining" or "modern machining method", generally refers to the machining method of removing or adding materials by using energy such as electric energy, thermal energy, light energy, electrochemical energy, chemical energy, acoustic energy and special mechanical energy, so as to realize the removal, deformation, performance change or electroplating of materials.

Compared with traditional processing methods, it has many unique characteristics:

The processing range of (1) is not limited by the physical and mechanical properties of materials, and it can process any hard, soft, brittle, heat-resistant or high-melting metal and nonmetallic materials.

(2) It is easy to process complex surfaces, fine surfaces and flexible parts.

(3) It is easy to obtain good surface quality, and the thermal stress, residual stress, cold work hardening and heat affected zone are relatively small.

(4) Various processing methods are easy to combine to form a new processing method, which is convenient for popularization and application.

Main application fields of special processing

[Edit this paragraph]

Special machining technology is known internationally as 2 1 century technology, which plays an important role in the development and production of new weapons and equipment. With the development of new weapons and equipment, the demand for special processing technology at home and abroad is increasingly urgent. No matter aircraft, missiles or other combat platforms, it is required to reduce structural weight, increase flight speed, increase range and reduce fuel consumption in order to achieve the purpose of high tactical performance, long structural life and good economic endurance. Therefore, the above weapon systems and combat platforms need new structures such as integral structure, lightweight structure and advanced cooling structure, as well as new materials such as titanium alloy, composite material, powder material and metal compound.

Therefore, it is necessary to adopt special processing technology to solve the processing problems that cannot be realized by conventional processing methods in weapon equipment manufacturing. Therefore, the main application fields of special processing technology are:

Refractory materials, such as titanium alloy, heat-resistant stainless steel, high-strength steel, composite materials, engineering ceramics, diamond, ruby, hardened glass and other materials with high hardness, high toughness, high strength and high melting point.

Machining difficult parts such as three-dimensional cavities, holes, group holes and narrow seams of complex parts.

Machining low rigidity parts, such as thin-walled parts and elastic parts.

Welding, cutting, drilling, spraying, surface modification, etching and fine machining are realized by high energy density beam.

Laser processing technology

[Edit this paragraph]

Foreign laser processing equipment and technology have developed rapidly, and now they have 100kW high-power CO? 2 laser, kW class Nd:YAG solid-state laser, with high beam quality, and some can be equipped with optical fiber for multi-station long-distance work. Laser processing equipment has high power and high degree of automation. Numerical control and multi-coordinate linkage are widely used, and auxiliary systems such as laser power monitoring, automatic focusing and industrial TV display are installed.

The minimum aperture of laser drilling reaches 0.002mm, and the gas film holes of aero-engine turbine blades and combustion chambers are successfully processed by automatic six-axis laser drilling equipment, achieving the effect of no recast layer and no micro-cracks. Laser cutting is suitable for parts made of heat-resistant alloys, titanium alloys and composite materials. At present, the cutting speed of thin wood can reach 15m/min, and the slit is narrow, generally between 0.1~1mm. The HAZ is only 10% ~ 20% of the slit width, and the maximum cutting thickness can reach 45 mm. It has been widely used in aircraft three-dimensional skin, frame, hull grille and helicopter rotor.

Laser welding of thin plates is quite common, which is mostly used in automobile industry, aerospace industry and instrument industry. Laser micro-welding technology has become an important means of micro-connection of micro-component packaging nodes in avionics and high-precision mechanical equipment. Laser surface strengthening, surface remelting, alloying and amorphization are widely used, and the application of laser micromachining in electronic, biological and medical engineering has become an irreplaceable special processing technology. Laser rapid prototyping technology has developed from research and development stage to practical application stage, and shows broad application prospects.

The application research of laser processing has been started in China since the early 1970s, but the development speed is slow. Although there are some applications in laser drilling, laser heat treatment and welding, the quality is unstable. At present, a solid-state laser processing system with optical fiber transmission has been developed, and the laser welding of three laser beams coupled with optical fiber and quartz watch movement has been realized. Laser sintering will be completed soon ... >>

Question 9: Overview of special processing Special processing refers to those processing methods that do not belong to the traditional processing technology. It is different from the traditional machining methods that directly use mechanical energy to remove redundant materials, such as tools and abrasives. Special machining is a new technology developed in recent decades, which is an important supplement and development to traditional machining methods, and it is still under research, development and perfection. Electrical energy, thermal energy, acoustic energy, optical energy, chemical energy and electrochemical energy are directly used to process workpieces, and sometimes mechanical energy is combined. EDM and ECM mainly use electric energy, which are widely used in special machining, and are generally called electro-machining. EDM, invented in the 1940s, pioneered the method of machining hard workpieces with soft tools without mechanical force. After 1950s, electron beam machining, plasma arc machining and laser machining appeared one after another. These processing methods do not use molding tools, but use high-density energy beams for processing. For high-hardness materials and special parts with complex shapes and fine precision, special machining has great applicability and development potential, and has been more and more widely used in the manufacture of molds, measuring tools, tools, instruments and meters, aircraft, spacecraft and microelectronic components. The development direction of special machining is mainly: improving machining accuracy and surface quality, improving productivity and automation, developing compound machining combining several methods and developing nano-scale ultra-precision machining.

Question 10: What is special treatment? What are its characteristics? Special machining is a method to remove redundant materials from blanks or workpieces by using electric energy, electrochemical energy, optical energy, acoustic energy or a combination of them. Special treatment has the following characteristics:

(1) The hardness of the tool used for machining need not be greater than that of the material to be machined;

(2) There is no obvious mechanical cutting force between the tool and the workpiece during machining.