Business Type: Manufacturer/Factory & Trading Company
|1. Raw Material||Copper, phosphor copper, Brass, Stainless steel, Aluminum, steel, spring steel, Nickel-Silver... and all different kinds of metal;|
|2. Surface treatment||Gold / Silver /Tin / Nickel / Zinc / Chromium / Copper-plating / Laser etching/Screen printing/Phosphating (can pass salt spray testing with 160 hours)/Black coating / Painting/ Power coating /Electrophoresis / Passivating /Deburring / Polishing / Brush according to ROHS standard;|
|3. Quotation||Please provide the Formal drawings (normally, with DWG/STP/PDF file ), and make notes with material/QTY/surface treatment and any other requirements, we will provide you the quotation sheet within 48-72 hours;|
|4. Prototype & Mould||We make the prototypes or molds according to the drawings confirmed by both of us and the customers! The lead time depends on the structure and qty of parts, Normally, the lead time for prototypes is 3-15 days; the lead time for mold is 10-25 days;|
|5. Production||We will provide samples according to the drawings to customers for approval. Then arrange the production and confirm the delivery date according to the Purchase Order; Normally, the lead time for production is 5-30 days, the structure of parts is different, and the lead time will be different.|
|6. Package||Plastic bags; Preserving Box; Reel/tape package; Plastic tray; Wood box; Export carton and any other customized package according to the customers' requests.|
Deformation process of deep drawing
The coordinate grid test method was used to analyze. During deep drawing, the blank holder first compresses the medium plate blank, and the punch goes down, forcing the material (flange part) under the blank holder to produce plastic deformation and flow into the gap between the punch and the die to form the side wall of the cylinder. After deep drawing, it is found that the bottom mesh is basically unchanged, and the simple wall part changes greatly.
1. the concentric circles with the same original spacing form a circumferential line with the same length and increased spacing. The closer to the cylinder mouth, the greater the spacing.
2. the original radiation lines with equal division become vertical parallel lines with equal spacing.
3. radial elongation deformation and tangential compression deformation of flange material
Summary: the deformation of deep drawing materials mainly occurs in the flange part. The process of deep drawing deformation is essentially a process in which the material at the flange produces plastic deformation under the action of radial tensile stress and tangential compressive stress, and the flange shrinks continuously and turns into the cylinder wall. This degree of deformation is the largest at the outermost edge of the flange.