Tsinfa is a professional supplier & manufacturer of hydraulic press machine in China. The deep drawing hydraulic press is equipped with a hydraulic cushion and ejector rod, which can realize various technological actions such as positive drawing and reverse stretching. Double action, The main oil cylinder moves down, the lower oil cylinder pushes out upward, and the thin plate is clamped in two directions while moving down to achieve stretching. Suitable for the deep and shallow drawing process of all kinds of complex sheet metal covering parts. It can also be used for bending, flanging, pressing, and other processes. The machine has an independent power mechanism and electrical system, which can be controlled by PLC and can realize three operation modes: adjustment, manual operation, semi-automatic operation. The machine has high rigidity, high precision, strong anti-deflection capacity, energy-saving, high efficiency.
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Hydraulic deep drawing press for sale:
Specification & image
150 Ton Deep Drawing Machine
Sheet metal drawing molding, one – time, tonnage can be customized, stretching depth can be customized
Hydraulic deep drawing machine video:
We can customize according to your needs, contact us for solution and quotation
Application of hydraulic deep drawing press machine:
Metal deep drawing is used in many industries
1. Auto parts: body covering parts, fuel tank, chassis, bumper，axle housing.
2. Household appliances: washing machine parts, rice cooker liner, TV parts, refrigerator parts.
3. Kitchen utensils: stainless steel utensils, sinks, pots, and other metal containers.
4. Others: Food and beverage packaging, furniture, lamps, boiler heads, liquefier tanks, ships, aerospace, aviation, etc
What is deep drawing process?
Deep drawing is a kind of cold stamping process which uses drawing hydraulic press and die to draw the metal plate blank or semi-finished blank into an open hollow part. As the metal is drawn (pulled), it stretches thinner, into a desired shape and thickness. … The specific definition for sheet metal drawing is that it involves plastic deformation over a curved axis. The shape of products that can be made by deep drawing process is cylindrical, door path shaped, spherical, conical, rectangular, and other irregular open hollow parts.
Which type of metal is suitable for deep drawing?
The deep drawing process depends on the balance of ductility and compression resistance of the metal because the ductility of metal directly affects the production efficiency and quality of the drawing. Deep drawing is suitable for materials with high elongation. The main properties of deep drawing are obtained by the thinning and extension of metal materials, so generally, sheet metal is selected as the raw material for processing. Metal materials suitable for deep drawing include：
What is draw ratio?
Measurement of the amount of drawing performed on a sheet metal blank can be quantified. This can be down with the drawing ratio. The drawing ratio is roughly calculated as, DR=Db/Dp.
Db is the diameter of the blank and Dp is the diameter of the punch. For non-circular shapes, the maximum diameter is sometimes used, or occasionally drawing ratio is calculated using surface areas. The limit to the drawing ratio for an operation is usually 2 or under. Actual limits to the amount of drawing possible are also dependant upon the depth of drawing, punch radius, die radius, the anisotropy of the sheet, and the blank’s material.
How do you calculate deep drawing force?
Calculate the required force to deep draw a piece of sheet metal based on the drawing ratio, sheet thickness, and the ultimate tensile strength of the material. The drawing ratio is a measure of the severity of the drawing operation and is the ratio of the initial blank diameter to the punch diameter. For a given material, the limiting drawing ratio (LDR) is a measure of that material’s deep drawability and is calculated from the largest blank that can be completely deep drawn for a given punch diameter. The amount of draw can also be represented as the percent reduction of the blank diameter. F = Spdt, where F is the maximum punch force in pounds, S is the nominal tensile strength of the material being drawn (psi), d is the punch or cup diameter and t is the blank thickness. Thus, the force equals pressure times the cross-sectional area of the cup wall. The calculated tonnage can be used for the selection of a machine to perform the deep-drawing operation.
What is deep drawing used for?
Deep drawing is used for sheet metal. The process is equally suitable for industrial small-series and mass production. Many everyday objects consist of deep-drawn parts. Such as stainless steel tableware, sinks, metal casings for appliances, furniture, lamps, etc. Deep drawing technology has outstanding advantages and has been widely used in the field of the national economy. It not only occupies a very important position in daily necessities but also plays an important role in the production of modern aviation, aerospace, ordnance, automobile, tractor, motor, electrical appliances, and electronic instruments.
How do you prevent wrinkles in a deep drawing?
- In the process of metal drawing, the deformed part of the blank must be pressed tightly with reasonable material pressing device, and reasonable material pressing force shall be set to prevent the flange part from arching and wrinkling
- The draw bead is set on the pressing surface to adjust the flow of the material so that the flow resistance of each part is uniform. The amount of material flowing into the cavity is suitable for the needs of the parts, to prevent wrinkling and cracking.
- Use the appropriate ejector pressure to make the stamping part complete and avoid wrinkling.
What is the formability of sheet metals?
Formability is the ability of a given metal workpiece to undergo plastic deformation without being damaged. The plastic deformation capacity of metallic materials, however, is limited to a certain extent, at which point, the material could experience tearing or fracture. A metal with a large elongation has good formability because the metal can undergo a large amount of strain (work) hardening. Formability of sheet metal can be evaluated by various tests like swift cup drawing test, Fukui’s conical cup drawing test, Erichsen cupping test, Osu Formability Test, Hydraulic Bulge Test, Duncan Friction Test. These tests are widely used to evaluate of formability different sheet metals.