Sheet metal material for sheet metal parts, what material is sheet metal?

There are many sheet metal materials suitable for stamping processing, and the sheet metal materials widely used in the electronic and electrical industry include:

1.Ordinary cold-rolled plate SPCC

SPCC refers to the continuous rolling of steel ingots into steel plate coils or sheets of the required thickness through a cold rolling mill. The surface of SPCC does not have any protection, and it is easy to be oxidized when exposed to air, especially in a humid environment, the oxidation rate is accelerated, and dark red rust appears.

2.Galvanized steel sheet secc

The substrate of SECC is a general cold-rolled steel coil, which becomes an electrogalvanized product after degreasing, pickling, electroplating and various post-treatment processes in the continuous electrogalvanizing production line. SECC not only has the mechanical properties and similar machinability of general cold-rolled steel sheets, but also has superior corrosion resistance and decorative appearance. It has great competition and substitution in the market of electronic products, home appliances and furniture.

For example, SECC is commonly used in computer cases.

3.Hot-dip galvanized steel sheet SGCC

Hot-dip galvanized steel coil refers to the semi-finished product after hot-rolled pickling or cold rolling, which is cleaned, annealed, and immersed in a molten zinc tank with a temperature of about 460 °C, and the steel sheet is coated with a zinc layer, and then quenched and tempered and chemically treated. SGCC material is harder than SECC material, poor ductility (avoid deep pumping design), thicker zinc layer, and poor weldability.

4.Stainless steel SUS301

The content of CR (chromium) is lower than that of SUS304, and the corrosion resistance is poor, but it can obtain good tensile force and hardness after cold working, and has good elasticity, which is mostly used for shrapnel springs and anti-EMI.

5.Stainless steel SUS304

One of the most widely used stainless steels, it is more corrosion-resistant, heat-resistant, and has very good mechanical properties than CR (chromium) steels because of its Ni (nickel) content, no heat treatment hardening, and no elasticity.

Sheet metal is a comprehensive cold working process for metal sheets (usually below 6mm), including shearing, punching, lamination, folding, riveting, splicing, forming (such as automobile body) and so on. Its distinctive feature is that the thickness of the same part is the same.

Generally speaking, the basic equipment of sheet metal process includes shear machine, CNC punching machine, laser, plasma, water jet cutting machine, bending machine and various auxiliary equipment such as: uncoiler, leveling machine, deburring machine, spot welding machine, etc.

Generally, the four most important steps of the sheet metal process are shearing, punching, rolling, welding, surface treatment, etc.

Sheet metal, a processing technology, sheet metal has not yet had a relatively complete definition.

According to a definition in a foreign professional journal, it can be defined as: sheet metal is a comprehensive cold working process for metal sheet (usually below 6mm), including shearing, punching, composite, folding, riveting, splicing, forming (such as automobile body) and so on. Its distinctive feature is that the thickness of the same part is the same.

Here's what happens when a car needs to be repaired using sheet metal:

1. Impact bump damage:

The impact concave and convex damage should be repaired by sheet metal, and the impact concave and convex of sheet metal parts can be repaired by hammering method or top drawing method. Different treatment methods are used for the same situation. Of course, the degree of unevenness is different, and the process flow is not the same, and the problem of body material must also be considered.

2. Warping, skewed and deformed

Body warping, skewed deformation sheet metal repair method, sheet metal parts due to impact, scratch or improper use will produce warping, skew and other deformations, at this time can be eliminated by mechanical methods or by means of flame heating and knocking.

3. Broken or perforated:

Damaged or perforated sheet metal repair method, the surface of the sheet metal parts damaged or modified by the perforation can be repaired by the application method, and the adhesives currently used mainly include epoxy resin glue, phenolic resin glue and copper oxide binder.

Car sheet metal painting is easy to learn, because there are not too many requirements, as long as you are attentive and interested, you can learn. It is not difficult to learn automobile maintenance technology, but if you want to learn it well, you must spend a lot of time practicing, accumulate more experience, and practice makes perfect before you can become a teacher. Sheet metal painting is two types of work, sheet metal worker and painter.

When the automobile sheet metal is painted, it is first processed by the sheet metal worker, and then handed over to the painter to spray the paint. Sheet metal workers need to learn the use of basic equipment, such as grinding, dismantling, drawing, etc. Painters need to learn how to spray and dry masking, putty, and various paints.

The basic process of sheet metal painting is usually divided into five steps:

1. Confirm the plan: formulate the corresponding maintenance plan according to the severity of the vehicle collision. If it is a serious traffic accident, it will also involve the engine, gearbox, circuit, etc., and then it will need to be disassembled and repaired by the personnel of the machine repair department.

2. Sheet metal correction sheet metal correction needs to repair the deformed parts through corresponding maintenance equipment according to the degree of deformation of the body. Sheet metal includes cutting, grinding, stretching, receiving, oxygen regeneration, etc., the purpose of which is to restore the deformed parts to their original shape and maintain the original rigidity of the metal.

3. Scraping and shaping: There will be a lot of flaws and repair traces after the vehicle passes the sheet metal, which is an irreparable defect in the sheet metal work, even if the new parts are directly replaced, there will be imperfections, and then it is necessary to reshape the body waist line and flatness by scraping the ash. This process may seem simple, but it is actually a test of the worker's skill.

4. Spraying paint: The process of spraying paint is also relatively cumbersome, and there are also high requirements for the working environment, which needs to be carried out under dust-free conditions. Painting is mainly divided into the following steps:

Spraying the primer - spraying the primer - sanding the primer - mixing the paint - spraying the topcoat - drying the paint.

5. Paint treatment: Paint treatment is the last process in the whole sheet metal painting work. In fact, no matter how meticulous the work of the workers is, there will be some imperfections left behind, even some dust floating in the air will affect the whole effect, and then it can only be remedied by this link.

Usually the main remedy is to use very fine beauty sandpaper or sand with a polisher to achieve a "mirror" effect.

Sheet metal is not a material, it is a processing process. There is no complete definition of sheet metal. According to a definition in a foreign professional journal, it can be defined as:

Sheet metal is a comprehensive cold working process for metal sheets (usually below 6mm), including shearing, punching, cutting, compounding, folding, riveting, splicing, forming, etc. Its distinctive feature is that the thickness of the same part is the same. <

Sheet metal is not a material, it is a processing process. There is no complete definition of sheet metal. According to a definition in a foreign professional journal, it can be defined as:

Sheet metal is a comprehensive cold working process for metal sheets (usually below 6mm), including shearing, punching, cutting, compounding, folding, riveting, splicing, forming, etc. Its distinctive feature is that the thickness of the same part is the same.

The materials are listed and destroyed as follows:

1. Galvanized steel, electro-galvanized sheet, hot-dip galvanized sheet.

2. Stainless steel, a general term for stainless acid-resistant steel that resists the corrosive effect of atmosphere, acid, alkali, salt and other media.

3. Tinplate is a low-carbon steel electroplated tinned steel.

4. Spring steel, medium carbon steel containing manganese, chromium, silicon and other alloy steels.

5. Copper and copper alloys.

6. Aluminum and molten aluminum alloy deficiency, etc.

7. Magnesium synthetic fiber buried gold.

Sheet metal parts are products processed by sheet metal technology, and we can't do without sheet metal parts everywhere in our lives. Sheet metal parts are made by filament power winding, laser cutting, heavy machining, metal bonding, metal drawing, plasma cutting, precision welding, roll forming, sheet metal bending forming, die forging, water jet cutting. Pei Na quietly.

A definition in a foreign professional journal can define sheet metal as: sheet metal is a comprehensive cold working process for metal sheet (usually below 6mm), including shearing, punching and composite, folding, welding, riveting, splicing, forming (such as automobile body) and so on.

Its distinctive feature is that the thickness of the same part is the same. The products processed by the sheet metal process are called sheet metal parts. The sheet metal parts referred to by different industries are generally different, and they are mostly used for assembly.