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What are the processing types of stainless steel products?
- Categories:Industry Dynamics
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- Time of issue:2022-02-17 17:48
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(Summary description)With the development of stainless steel technology, the various advantages of stainless steel are becoming more and more popular.
What are the processing types of stainless steel products?
(Summary description)With the development of stainless steel technology, the various advantages of stainless steel are becoming more and more popular.
- Categories:Industry Dynamics
- Author:
- Origin:
- Time of issue:2022-02-17 17:48
- Views:0
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With the development of stainless steel technology, the various advantages of stainless steel are becoming more and more popular. As a result, many products are now starting to use stainless steel as a raw material. Of course, in addition to stainless steel products with fixed specifications, many companies or individuals prefer some original customized stainless steel products, so they hope to have a certain understanding of the processing of stainless steel products. Customized selection of suitable stainless steel product processing plants.
1. Processing of stainless steel products:
1. First, stainless steel products need to be made of certain parts before they are manufactured, and then large-scale stainless steel products are completed by assembly and welding of parts. The machining of these stainless steel parts is mostly very basic stainless steel sheet machining. Namely, cutting, folding, planing, punching and laser cutting. Of course, if customers have requirements on the surface of stainless steel products, the factory will also process raw materials appropriately, such as stainless steel plates and tubes, to achieve the desired effect.
2. The processing price of stainless steel products has a certain relationship with many factors. First is the raw material. Due to different processing techniques and advantages, stainless steel is divided into many different types. Among them, 304, 201, etc. are relatively common. If the customer needs, the material is special, and the price of stainless steel material fluctuates according to the choice of material. In addition to raw materials, differences in the processing technology of stainless steel products can also cause price fluctuations. After knowing the price, we can query the price of each link in different situations, and then combine them.
3. In addition, due to the stainless steel processing technology and the factory equipment of the stainless steel product processing plant, the finished product will be uneven. Therefore, when choosing a stainless steel product processing factory, you must pay attention to choosing a regular enterprise to ensure that the quality of the products obtained is reliable.
Second, the commonly used processing technology of stainless steel products:
1. The surface, shape and properties obtained after post-processing the original shape of stainless steel are suitable for industrial stainless steel products. Such as: commonly used processing flat, slitting, and then surface treatment, wire drawing, sandblasting, frosting, mirror, color electroplating and coating. Further processing includes laser, shearing, bending, grooving, stamping, welding, polishing, etc.
2. Introduce the original surface and shape of stainless steel: stainless steel coils (usually from large steel mills in the form of steel coils). Stainless steel coils are divided into cold rolled and hot rolled surfaces. The thickness of cold rolled stainless steel is usually less than 3mm, also known as sheet. The total thickness of the hot-rolled plate is 3mm-75mm, and it is divided into medium and heavy plates according to different thicknesses. Stainless steel cold rolling: The steel plate is a stainless steel plate produced by cold rolling process, the conventional thickness is 0.1mm-3mm sheet, (our company can cold-roll 8mm sheet) for making corrosion-resistant materials, parts, pipes, containers in the petroleum and chemical industries , medical equipment, marine equipment, etc.
3. Stainless steel hot-rolled sheet: Hot-rolled sheet is also called NO.1, industrial surface, original surface: NO.1 surface that has been pickled after heat treatment and hot rolling. Generally used for cold-rolled materials, industrial tanks, chemical equipment, etc., thickness from 3.0MM-75.0MM
3. Slitting of stainless steel coils: According to large stainless steel coils, it is divided into small coils, which are usually used for pipe production or stamping products, gaskets, parts, etc.
4. Stainless steel plate: Flatten the large steel coil to the corresponding required size, the general market is: 1000 * 2000 1220 * 2440 1220 * 3050 1500 * 3050 1500 * 6000 and other length and width dimensions, in addition, it can also be adjusted according to needs Flatten and extend. Secondly, the application of stainless steel materials is more and more extensive, and the requirements for appearance and surface are also higher and higher, and there are more and more styles. For example, some decorative projects have particularly demanding surfaces.
1. Surface treatments include wire drawing, frosting, sandblasting, chaotic lines, etching, embossing, mirror finish, electroplating, no fingerprints, etc. (Typically, surface-treated stainless steel materials will have a protective film attached).
2. Stainless steel product processing, product processing includes laser, bending, welding, grooving, grinding, polishing and multiple processing steps to obtain final shaped stainless steel products, which are common in the market.
3. The processing of stainless steel products can be designed according to customer needs, or according to the requirements of samples or drawings provided by users.
5. By analyzing the above processing difficulties, the processing technology of stainless steel and the design of related tool parameters should be very different from ordinary structural steel materials. The specific processing technology is as follows:
1. Drilling: During the drilling process, it is difficult to machine holes due to the poor thermal conductivity and small elastic modulus of stainless steel materials. In order to solve the hole processing problem of this material, it is mainly to select the appropriate tool material for drilling processing
(1) Selection of tool material Due to the large cutting force and high cutting temperature when machining stainless steel parts, cemented carbide with high strength and good thermal conductivity should be selected.
(2) For the processing of hardened parts of such materials, CBN (cubic boron nitride) inserts can be used. The hardness of CBN is second only to diamond, it can reach 7000~8000HV, and its wear resistance is extremely high. Compared with diamond, cubic boron nitride has outstanding advantages. The heat resistance is much higher than that of diamond, which can reach 1200°C and can withstand higher cutting temperatures. In addition, it is chemically inert and has no chemical action against iron group metals at 1200-1300°C, making it ideal for machining stainless steel materials. Tool life is dozens of times that of carbide or ceramic tools.
(3) Tool geometry parameters play an important role in its cutting performance. For fast and smooth cutting, carbide tools should use a larger rake angle to prolong tool life. Typically, the rake angle is 10°-20° for roughing, 15°-20° for semi-finishing, and 20°-30° for finishing. The basis for selecting the entry angle is that when the rigidity of the processing system is good, it can be 30°~45°; if the rigidity of the processing system is poor, it can be 60~75°. When the aspect ratio of the workpiece exceeds 10 times, it can be 90°.
(4) In most cases, ceramic tools are cut with a negative rake angle when boring stainless steel materials with ceramic tools. Usually, the rake angle should be -5°~-12°. This will help strengthen the blade and take full advantage of the higher compressive strength of ceramic tools. The size of the relief angle directly affects the wear of the tool and also the strength of the blade. Usually choose 5°~12°. Changes in the entry angle will affect the radial and axial cutting part changes, as well as the size of the cutting width and cutting thickness. Since the vibration of the machining system is extremely detrimental to ceramic tools, the selection of the entry angle should be beneficial to reduce this vibration, usually 30°~75°. When using CBN as the tool material, the geometric parameters of the tool are 0°~10° for the rake angle, 12°~20° for the relief angle, and 45°~90° for the entry angle.
(5) The roughness of the rake face should be small during grinding. To avoid chip sticking, the front and sides of the tool should be sharpened carefully to ensure that the roughness values are small, reducing resistance to chip flow and preventing chips from sticking to the knife.
(6) The blade of the tool should be kept sharp. The edge of the tool should be kept sharp to reduce work hardening. The feed rate and backcut should not be too small to prevent the tool from cutting into the hardened layer and affecting tool life.
(7) Pay attention to the grinding of the chip breaker. Due to the ductile nature of stainless steel chips, the chip breaker on the rake face of the tool should be properly ground to interrupt, contain and facilitate chip removal during cutting.
(8) Selection of cutting parameters According to the characteristics of stainless steel materials, it is recommended to choose a cutting method of low speed and large feed.
(9) The selection of cutting fluid should be appropriate. Since stainless steel has the characteristics of easy bonding and poor heat dissipation, it is very important to choose a cutting fluid with good anti-adhesion and heat dissipation properties when boring, such as choosing a cutting fluid with a high chlorine content. , and mineral oil and sulfite-free aqueous solutions with good cooling, cleaning, rust and lubricating properties, such as H1L-2 synthetic cutting fluid.
The above processing method can overcome the difficulties of stainless steel processing, greatly improve the tool life of stainless steel in the process of drilling, reaming and boring, reduce the number of sharpening and replacement tools in the operation, and improve the production efficiency and hole processing quality. Satisfactory results can be achieved in reducing labor intensity and production costs.
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