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.
The following issues shall be considered in the design of sheet metal processing structure: 1 It is necessary to consider the realization of product functions and its economy and practicality.
1 In the principle of convenient installation, the hanging beam is adopted, which is convenient and flexible for installation and movement.
Sheet metal manufacturers generally have many kinds of processes, and bending process is one of them, which is often used. Problems are inevitable in this processing process. Then I will introduce you how to solve the problems encountered in the bending process.
The features have the nature of parameterization, and their features are expressed in the way of parameters. Engineers establish a feature library in advance, which includes the features of parts commonly processed by sheet metal, such as flat plates, holes and grooves of various methods. Planning is to first input all the information of parts, select the matrix features in the feature library, generate matrix features, and take this as the basis for feature equipment modeling.
According to the problems encountered in the actual machining process, the problems needing attention in the structural design of sheet metal are discussed from the following aspects, and the corresponding design criteria are given.