Sheet metal processing is the most commonly used metal processing method nowadays. In the process of parts processing, the size of produced sheet metal parts cannot be absolutely accurate due to various factors such as processing accuracy of machinery and equipment, die wear and tear, processing errors, etc. In order to ensure the availability of the workpiece, we must limit the tolerance of the sheet metal workpiece to the minimum. So what are the common tolerance standards in sheet metal processing? How should they be marked? Today, we will share them with you.
The effect that can be brought out in precision sheet metal differs from one material to another, ranging from ordinary cold-rolled sheet to composite precision sheet metal. This is because the degree of processing and the material used will affect the effect of the whole sheet metal. Generally speaking, the two main criteria for judging the standard of precision sheet metal are the anti-corrosion type and wear resistance. Then how to choose the right material for precision sheet metal processing?
6 types of bending and forming of sheet metal Bending forming of sheet metal is when the sheet metal first goes through elastic deformation and then enters plastic deformation under the pressure of the upper or lower die of the bending machine. At the beginning of plastic bending, the sheet is free to bend. With the pressure of the upper die on the plate, the plate and the lower die V-groove surface gradually tighten, while the radius of curvature and bending force arm also gradually become smaller. Continue to press until the stroke is terminated, so that the upper and lower die and the plate are in full contact at three points, at which time a V-bend is completed and a bend is formed.
Sheet metal is one of the design types that we are most exposed to on a daily basis and has a complex design process. As sheet metal is widely used, sheet metal design has become an important part of product development, so what do you need to pay attention to during the sheet metal design process? Here's what Muvot introduces to you.
What are the main welding methods commonly used by sheet metal workers? Arc welding The heat generated by the arc discharge is used to melt the electrode and the workpiece and form a weld after condensation to obtain a firm joint.
1) What is Surface Treatment? Surface treatment: change the shape, chemical composition and organizational structure of the product surface and near surface area by the most economical and effective method, effectively improve and improve the decorative performance(Decorative sheet metal cabinet), corrosion resistance and wear resistance of the product, and prolong the service life of the product.
The defects must be completely removed before welding, and the groove surface shall be flat and smooth without sharp corners. According to the defects of steel castings, the defects in the welding area can be removed by shovel excavation, grinding, carbon arc air gouging, gas cutting or machining.
Sheet metal is generally some sheet metal through manual or die stamping to produce plastic deformation to form the desired shape and size, and can further form more complex parts through welding or a small amount of machining. For example, chimneys, iron buckets, oil tanks, oil pots, ventilation pipes, funnel-shaped, etc. commonly used in families, as well as electrical cabinets, shells of various special equipment, computer cases, automobile shells, etc., are all sheet metal parts.
In the case of the same thickness: hot rolled plate < cold rolled plate < hot zinc plate < electric zinc plate < SD steel plate < stainless iron < stainless steel, the same materials, generally belong to the situation that the greater the thickness, the lower the price In the cost of sheet metal parts, the material cost basically accounts for 60-70%, sometimes higher Therefore, it is necessary to design a reasonable structure and improve the utilization rate of materials If the material utilization rate is low, the product price may be lower than the waste price III The purpose of steel plate surface treatment is to achieve the purpose through surface treatment because some sheet metal materials do not have the ability of rust prevention and corrosion prevention.
Custom Laser Cut MetalThere are many types of processing methods involved in the metal processing industry, and sheet metal processing is one of the more common processing methods. During the processing and production, the staff need to learn the processing technology first, so as to ensure the processing quality of the material and degree of processing.
Generally speaking, the equipment of sheet metal processing plant includes plate shears, CNC punches, laser plasma, water jet cutting machines, compound machines, bending machines and various auxiliary equipment, such as uncoilers, leveling machines, deburring machines, spot welding machines, etc.
Because designers cannot get rid of the design idea of machining structural parts, in order to improve the design strength of sheet metal parts, they blindly increase the thickness of sheet metal materials, but cannot improve the design strength from the aspects of sheet metal stamping process and bending process. When designing a sheet metal product, materials with the same thickness should be selected as far as possible, which can play a positive role in the production material preparation, processing, welding and other technological processes.