CNC milling is a machining process that uses computer-controlled and rotating multi-point cutting tools to incrementally remove material from a workpiece and produce a custom-designed part or product. The process is suitable for machining a variety of materials such as metal, plastic, wood, and producing a variety of custom designed parts and products. CNC Milling Machining has evolved over the years to produce precision milling parts that meet the stringent requirements of today's demanding industries. The applications for CNC Milled Parts are nearly endless and span many industries such as aerospace, automotive, robotics, medical and so on.
In the CNC machining industry, we generally divide it into CNC milling, CNC turning, and CNC turning and milling composite processing, and now also include a little CNC grinding. Three-axis CNC, four-axis CNC and five-axis CNC machining are commonly used in CNC milling. How many axes CNC are used for a workpiece mainly depends on the complexity of the workpiece and the accuracy requirements of the workpiece. We usually choose the machine tool and determine the processing technology according to the material, structure and precision requirements of the workpiece, and improve production efficiency and reduce production costs on the premise of ensuring that the requirements of the workpiece are met.
SCZY includes a batch of CNC milling machines imported from Switzerland and Japan, and some CNC milling machines produced in China. We can choose suitable machine tools for processing according to the specific requirements of customers' products, so as to achieve the best product state and the best economic state. Our highest accuracy can reach ±0.005mm (specifically, it is also determined according to the material of the workpiece and the complexity of the workpiece). Here are some of the products we've made:
CNC Milling Services, CNC Milled Parts, CNC Milling Machining, CNC Milling Metal, CNC Milling Plastic Shenzhen SCZY Technology Co.,Ltd , https://www.szsczycasting.com
Gray cast iron valve material selection
Gray cast iron valve for the nominal pressure PN ≤ 1.0MPa, the working temperature of 10 ~ 200 ℃ water, steam, air, kerosene and oil medium gray cast iron valve, the main parts of the material selection see Table 1: 1 "gray cast iron valve main parts material selection table parts name material name brand standard valve body, bonnet, opening and closing pieces, bracket Gray cast iron HT200, HT250 GB / T HT300, HT350 stem, shaft chromium stainless steel 1Cr13, 2Cr13, 3Cr13 GB / T 1220-1992 Aluminum bronze QA19-2, QA19-4 GB / T 4423-1992 Manganese brass HMn58-2 GB / T 4423-1992 Cast aluminum bronze bearings ZCuA19Mn2, ZCuA19Fe4Mn2 GB / T 1176-1987 Casting manganese brass ZCuZn38Mn2Pb2 Rocker Carbon Steel Casting WCA, WCB, WCC GB / T Quality carbon steel 20,25,35 GB / T 699-1999 spring spring steel 50CrVA GB / T 1222-1992 60Si2Mn, 60Si2MnA Float austenitic stainless steel 1Cr18Ni9, 1Cr18Ni9Ti GB / T 1220-1992 0Cr18Ni9Ti, 1Cr17Ni3Mo2Ti filter 1Cr18Ni9, 1Cr18Ni9Ti seat, opening and closure of the sealing surface of cast aluminum brass ZCuZn25A16Fe3Mn3 GB / T 1176-1987 cast aluminum bronze ZCuA19Mn2, ZCuA19Fe4Ni4Mn2 cast manganese Brass ZCuZn38Mn2Pb2 stainless steel Steel 1Cr13,2Cr13,3Cr13 GB / T 1220-1992 1Cr18Ni9,1Cr18Ni9Ti Tinned copper wire 221 - Polytetrafluoroethylene SFB-1, SFB-2, SFB-3 HG2-534 SFBN-1, SFBN-2, SFBN- 3 HG2-535 Rubber - - Stem nut Cast aluminum ZCrZn25A1Fe3Mn3 GB / T 1176-1987 Cast aluminum bronze ZCuA19Mn2, ZCuA19Fe4Ni4Mn2 Cast manganese brass ZCrZn38Mn2Pb2 Filler Teflon SFT-1, SFT-2, SFT-2, SFT -4 HG2-538 Corrosion Asbestos - - Rubber - - Dip Teflon Asbestos Rope - - Flexible Graphite - - Handwheel Malleable Cast Iron KTH330-08, HTH350-10 GB / T 9440-1988 Ductile Iron QT400-15, QT450- Note: Gray cast iron is generally used for nominal pressure PN ≤ 1.0MPa, but for DN ≤ 200mm stop valve, lifting check valve can also be used for nominal pressure PN = 1.6MPa. Part Name Material Name Grades Standard No. Body, bonnet, opening and closing parts, bracket Gray cast iron HT200, HT250 GB / T HT300, HT350 Stem, Shaft chrome stainless steel 1Cr13, 2Cr13, 3Cr13 GB / T 1220-1992 Aluminum Bronze QA19-2, QA19-4 GB / T 4423-1992 Manganese brass HMn58-2 GB / T 4423-1992 Bushings Cast aluminum bronze ZCuA19Mn2, ZCuA19Fe4Mn2 GB / T 1176-1987 Cast manganese brass ZCuZn38Mn2Pb2 Rocker carbon cast Steel WCA, WCB, WCC GB / T Quality carbon steel 20,25,35 Spring steel 50CrVA GB / T 1222-1992 60Si2Mn, 60Si2MnA Float austenitic stainless steel 1Cr18Ni9,1Cr18Ni9Ti GB / T 1220-1992 0Cr18Ni9Ti, 1Cr17Ni3Mo2Ti Filter 1Cr18Ni9, 1Cr18Ni9Ti Seals, sealing parts for opening and closing parts Cast aluminum ZCuZn25A16Fe3Mn3 GB / T 1176-1987 Cast aluminum bronze ZCuA19Mn2, ZCuA19Fe4Ni4Mn2 Cast manganese brass ZCuZn38Mn2Pb2 Stainless steel 1Cr13,2Cr13,3Cr13 GB / T 1220-1992 1Cr18Ni9,1Cr18Ni9Ti Tinned copper wire 221 - Polytetrafluoroethylene SFB-1, SFB-2, SFB-3 HG2-534 SFBN-1, SFBN- Stem nut Cast aluminum brass ZCrZn25A1Fe3Mn3 GB / T 1176-1987 Cast aluminum bronze Z CuA19Mn2, ZCuA19Fe4Ni4Mn2 Cast Manganese Brass ZCrZn38Mn2Pb2 Filler Teflon SFT-1, SFT-2, SFT-2, SFT-4 HG2-538 Corrosion Asbestos - - Rubber - - Polytetrafluoroethylene Asbestos Rope - - Flexible Graphite - - Hand wheel malleable cast iron KTH330-08, HTH350-10 GB / T 9440-1988 Ductile iron QT400-15, QT450-10 GB / T