Some common knowledge and processing methods of sheet metal - Dongguan Taojintan Metal Products Co., Ltd.

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Some common knowledge and processing methods of sheet metal

Release time：2017.07.10 News source： [ Go Back ] [ Print ]

       For some common sense and processing method of sheet metal. Let me explain to you.
, a sheet metal materials
       1, electrolytic plate: SECC (N) (antifingerprint board) and SECC (P), DX1, DX2, SECD (drawing board). Hardness: HRB50 degrees plus or minus 5 degrees. The tensile plate: HRB 32 ~37 degrees.
       2: SPCC, SPCD, cold rolled plate (tensile plate), 08F, 20, 25, Q235-A, CRS. Hardness: HRB 50 ~ + 5 degrees. The tensile plate: HRB 32 ~37 degrees.
       3: AL, AL, aluminum (1035), AL (6063), AL (5052).
       4 stainless steel plate: SUS, SUS301 (302303304), 2Cr13,1Cr18Ni9Ti.
       5 other commonly used material: pure copper (T1, T2), hot rolled plate, spring steel - aluminum zinc plate aluminum and so on.
       Two, sheet metal processing method
       1, material:
Material is the material to start cutting into a desired shape. Many of the methods of material. According to the type of machine and working principle can be divided into punching shear. Laser cutting.
       1.1 - shear shear shears into required shapes. The accuracy can be over 0.2mm, mainly used for shearing or cutting materials.
       1.2 punching blanking with CNC punching blanking (NC) or ordinary punching machine. The materials under two kinds of precision can reach more than 0.1mm, but the former material will have the trace and the efficiency is relatively low. The efficiency is high. But a single high cost. It is suitable for mass production.
       1.2.1 CNC punch in cutting through the upper and lower die fixed. The worktable moves to cut the workpiece shape to plate processing. There are two main types of Taiwan and AMADA CNC punch our.
       1.2.2 ordinary punch by the movement of the upper and lower die. The blanking die out to shape materials. Ordinary punch must generally be with shears with rushed to the required shape, i.e. with good shearing strip after to punch out the required shape parts.
       1.3 laser cutting by laser cutting equipment of plate continuous cutting to obtain the desired shape materials. It is characterized by high precision and can be processed with very complex materials but the processing cost is relatively high.
        forming 2:
       Sheet metal forming is one of the most important processing method in sheet metal processing. Forming can be divided into two parts: hand forming and machine forming. Hand forming is often used as supplementary processing or finishing work is seldom used. But in the processing of some complex shapes or prone to deformation of materials still cannot do without the manual forming. Hand forming is done with some simple jigs and fixtures. Mainly uses the following methods: bending, edge, edge, hog, curling and straightening.
       We mainly discussed here are: bending machine, stamping forming.
       2.1 bending relative movement -- the upper and lower die are respectively fixed on the bending machine under the table. By using servo motor transmission drive table, with the upper and lower mold shape, so as to realize the bending of sheet metal forming. The forming precision of bending can reach 0.1mm.
      2.2 Powered by a motor driven flywheel driven mode. Combined with the upper and lower die. The relative shape sheet metal parts forming deformation. The 2.2 stamping forming. The precision of stamping can reach above 0.1mm. Punching machine can be divided into ordinary punch and high speed press.
       3, connection
       Sheet metal connection is different materials through a way of connecting the required products together. Sheet metal connection can be divided into: welding, riveting, thread connection, etc..
       3.1 welding can be divided into: CO2 welding, Ar welding, resistance welding etc..
       3.1.1 CO2 welding principle: the use of protective gas (CO2) air and molten metal mechanical isolation, to prevent the molten metal oxide and nitride. Mainly used for welding iron, firm connection, shortcomings and good sealing performance, easy deformation. When welding CO2 welding equipment consists of CO2 welding robot CO2 and manual welding machine.
       3.1.2 Ar arc welding mainly used for welding aluminum and stainless steel materials. "Its processing principle and the advantages and disadvantages of CO2 and also divided into robot welding equipment and manual welding.
       3.1.3 resistance welding principle: resistance heat generated by welding using current, melting welding welding together. The heating equipment are songsin Chilon series series, etc..
       3.2 can be divided into: pressure riveting riveting joint and rivet connection etc.. Riveting equipment common pressure riveting machine - riveter and POP rivet gun etc..
       3.2.1 pressure riveting nut and the screw connection is pressed into the materials. So it can be connected with other parts through thread.
       3.2.2 rivet connection is two parts connected together by rivets riveting.
       Three, surface treatment
       Decorative surface treatment and protective effect of the surface of the product was recognized by many industries. The surface treatment method in sheet metal industry. Usually used in electroplating, spraying and other surface method.
       1, divided into: galvanized (plating color zinc, white zinc, blue zinc, black zinc, nickel, chrome, etc.); the main is to form a protective layer on the surface of materials, protective and decorative.
;
       2, spray painting and spraying two points, is after the first treatment, with a spray gun to spray coating materials, gas to the workpiece surface coating, coating is formed on the surface of the workpiece. After drying, play a protective role;
       Other surface: anodic oxidation, chromate, drawing, sandblasting etc.;

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