304 stainless steel application scope
304 stainless steel is a common stainless steel material, its density is 7.93 g/cm, and is also known as 18/8 stainless steel in the industry. 304 stainless steel with high temperature resistance of 800℃, good processing performance, high toughness, widely used in industry, furniture decoration industry and food and medical industry. 304 stainless steel is one of the most widely used chromium – nickel stainless steel, as a widely used steel, has good corrosion resistance, heat resistance, low temperature strength and mechanical properties; Stamping, bending and other thermal processing, no heat treatment hardening phenomenon (use temperature -196℃ ~ 800℃).
304 stainless steel has corrosion resistance in the atmosphere, if it is an industrial atmosphere or heavily polluted areas, it needs to be cleaned in time to avoid corrosion. Suitable for food processing, storage and transportation. It has good machinability and weldability.
Can be applied in plate heat exchanger, bellows, household goods (class 1 and 2 tableware, kitchen cabinet, indoor pipeline, water heater, boiler, bathtub), auto parts (windshield wipers, mufflers, mold products), medical appliances, building materials, chemistry, food industry, agriculture, ship parts and so on. 304 stainless steel is the national approval of food grade stainless steel.
Solutions for The Processing Deformation of Stainless Steel Sheet
Reduce stress in blank
Natural or artificial aging and vibration treatment can partially eliminate the internal stress of the blank. Pre – processing is also an effective process. For the larger blank, due to the large margin, so deformation is also large after processing.
If the redundant part of the blank is processed in advance, the margin of each part is reduced, which can not only reduce the processing deformation of the subsequent process, but also release a part of the internal stress after being pre-processed and placed for a period of time.
Improve the cutting performance of the tool
The use of hard alloy material to process stainless steel, choose tungsten cobalt which containing TaC or NbC type of fine grain or ultra-fine grain cemented carbide. Such as YG6x, YG813, YW4, YD15 and so on. Extreme pressure emulsion/L-MAC or sulfurized cutting oil should be used when milling stainless steel. Stainless steel carbide milling cutter, the milling speed should be 40~60m/min, in order to avoid cutting edge in the hardened layer and tool wear, feed should be greater than 0.1mm. With high hard tool to process stainless steel, in fact, for 304, 202 and other ordinary stainless steel material, with carbide tool can be. If processing 316 stainless steel, stainless steel and high-hard stainless steel after quenching and heat treatment,in addition to using high-hard tools, processing stainless steel requires sharper blades. It is best to use special stainless steel tools from well-known brands.
Improve the clamping method of workpiece
◆For thin-wall bushing parts, if adopt three jaw chuck or spring chuck for the radial clamping, once loosened after processing, the workpiece is bound to deformation. In this case, the axial face compression method with better rigidity should be used. In order to locate the inner hole of the parts, a self-made threaded mandrel is set into the inner hole of the parts, and a cover plate is used to press the end face and then the nut is tightened back. The clamping deformation can be avoided when machining the outer circle, Thus satisfactory machining accuracy is obtained.
◆When machining thin-wall thin sheet workpiece, it is best to choose vacuum chuck to obtain evenly distributed clamping force, and then to process with small cutting consumption, which can well prevent workpiece deformation.
◆Use tamping method. In order to increase the process rigidity of thin-walled workpiece, medium can be filled inside the workpiece to reduce the deformation of workpiece during clamping and cutting. For example, to the workpiece filled with 3% to 6% potassium nitrate urea melt, after processing, the workpiece immersed in water or alcohol, the filling medium can be dissolved out.
CNC Turend Parts CNC Machining Service Milling Parts
YIJIN Hardware Co., Ltd specializes in precision CNC Machining and provides OEM ODM service:CNC machining/Milling/turning parts, Casting Parts, Metal Stamping Parts, etc.
Mainly serves for Aviation, Electronic products, Furniture, Military Defense, Health Care, Automotive, Communication, Automotive, Racing car, New Energy, Infrastructure Enterprise. (such as high-speed trains and bridges.)
Material: Aluminum, Stainless Steel, Brass, Copper, Carbon Steel, Titanium alloy，Iron, Carbon Fiber, Plastic, Ceramic, Bamboo, Wood, Acrylic Etc.
Processing：CNC lathe, CNC milling and turning, grinding, bending, stamping,casting, etc.
Precision : The accuracy requirement is ± 0.002mm, and the finish requirement is Ra1.0μm.
Surface Treatment：Oxidation, hard Anodizing, Zinc-plated, nickel plated, chrome-plated, silver-plated, gold-plated, etc.
Milling processing Milling is to fix the blank and use a high-speed rotating milling cutter to cut on the blank to cut out the required shapes and features. Traditional milling is used more often for simple shapes / features such as contours and grooves. CNC milling machines can process complex shapes and features. The milling and boring machining center can perform three-axis or multi-axis milling and boring processing for processing, molds, inspection tools, tire tools, thin-walled complex curved surfaces, artificial prostheses, blades, etc. When choosing the content of NC milling processing, the advantages and key functions of NC milling machines should be brought into full play. Five-axis CNC machining is a type of milling. Yijin Hardware has purchased such high-precision equipment from Germany. Five-axis CNC machine tools are high-tech, high-precision machines that are specially used to process complex curved surfaces. This machine tool system has a significant influence on the aviation, aerospace, military, scientific research, precision equipment, high-precision medical equipment and other industries of a country. Yjin has such high-precision equipment, and provides professional support for enterprises and government agencies seeking high quality and high requirements around the world. Five-axis CNC includes cradle, vertical, horizontal, NC table + NC indexing head, NC table + 90 ° B axis, NC table + 45 ° B axis, NC table + A axis, two axis NC Spindle and so on.
(1) Double swing head (+ A, + C)
(2) Dip type swing head type (+ B, + C cutter)
(3) Double turntable type (NC work bench)
(4) Prone type work bench (+ B, + CNC work bench)
(5) One pendulum and one rotation form (+ A, NC work bench )
Yijin’s experienced technical operators can skillfully use all five axes to achieve extremely complex geometrically shaped parts and components that are required by the global high-end industry with high accuracy and superb technical level. The use of makes the clamping of the workpiece easy. No special clamps are required during processing, which reduces the cost of the clamps, avoids multiple clampings, and improves mold processing accuracy. Using five-axis technology to process the mold can reduce the number of fixtures. In addition, the 5-axis linkage machine tool can save many special tools in processing, so the tool cost is reduced. Five-axis machining is used in many demanding industries to produce precision parts with fast manufacturing time and repeatable accuracy. YIJIN Hardware is willing to provide high-precision professional five-axis CNC machining services for your industry, waiting for your contact.
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