Month: April 2022
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Characteristics of sheet metal manufacturing industry
Because most sheet metal manufacturing is the production and manufacturing of cold or hot separation and forming of raw materials without changing the cross-sectional characteristics of sheet metal materials, aluminum profiles and pipe fittings. Moreover, the produced metal material causes plastic deformation below the manufacturing hardening temperature, so it does not cause cutting. It can […]
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A summary of some bending elements
Bending is a stamping process that uses pressure to force the material to produce plastic deformation, so as to form a certain angle and curvature shape. Common bending includes V-shaped bending, Z-shaped bending and reverse bending. The following is a summary of some bending elements ： Bending height The bending height shall be at least […]
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Quality and specification of grinding
1) Grinding and polishing quality After grinding, the surface of the parts shall be free of unevenness, burr, concave hole and trachoma. After polishing, the overall surface shall be smooth. The surface of stainless steel products or welding parts(custom sheet metal parts) shall be treated with XX mesh wire drawing. After wire drawing, the wire […]
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Development and application of sheet metal manufacturing industry
Sheet metal manufacturing is the blanking or cold and hot forming of sheet metal materials, aluminum profiles and pipe fittings without changing their cross-sectional characteristics. Then the assembly is carried out by means of electric welding, riveting and screw connection, and the production and manufacturing mode of the specified metal structure is produced. The key […]
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Difficulties in aluminum welding
Very easy to oxidize. In the air, aluminum is easily combined with oxidation to form a dense aluminum oxide film (about 0.1-0.2um thick) , the melting point is high (about 2050 ℃), far exceeding the melting point of aluminum and aluminum alloys (about 600 ℃). The density of alumina is 3.95-4.10g/cm3, about 1.4 times that […]
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Grinding and polishing methods
Grinding before welding Grinding range: 15-50mm on both sides of all welds. Operation method: when grinding long and wide welds, use angle grinder or straight shank grinder equipped with stainless steel bowl brush to grind along the weld direction; For the weld requiring laser tracking automatic welding, the straight shank grinder can only be used […]
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Causes of burr production
Causes of burr production in hardware stamping parts(Sheet metal parts) 1.The first possible reason is that the knife edge is blunt. Burr will be produced when the cutting edge is worn, blunt or gnawed. The factors affecting the blunt edge are: 1)It is not lubricated in time during operation, resulting in rapid wear; 2)Didn’t grind […]
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Arc welding technology
Arc welding technology is divided into six welding methods: manual arc welding, submerged arc welding, gas tungsten arc welding, gas metal arc welding, plasma arc welding and tubular wire arc welding. The following is the introduction of these six different welding methods: 1.Manual arc welding Manual arc welding is one of the earliest and still […]
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Some bending methods
1)Suspended bending (also called three-point bending) The punch presses the workpiece into the die without pressing it against the die wall. When the punch core moves down, the edge of the workpiece bends upward and forms an included angle. The deeper the punch presses the workpiece into the die, the smaller the angle. At this […]
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Types of sheet metal materials
There are many sheet metal materials suitable for stamping. Sheet metal materials widely used in electronic and electrical industries include the following: Cold-rolled steel sheet / SPCC The steel ingot is continuously rolled into steel coil or sheet with required thickness by cold rolling mill. These coils and sheets are SPCC. There is no protection […]