Sheet Metal Processing Testing standards
Testing standards
Sheet metal quality defect description
Appearance defects
Including: cracks, necking down, deformation, pits, rust, material defects, corrugation, burrs, pulls, scratches, rounded corners, overlapping materials, and others.
2. Functional size defects
Including: hole deviation, less edges, less holes, inconsistent hole diameter, Multi material, inconsistent dimensions, and others.
3. Rework defects
Include: cracks, holes, solid inclusions, unfused and incomplete, shape defects, pits, planing marks, polishing, thinning of boards, and others.
Price calculation
There are numerous sheet metal processes. a piece of sheet metal products needs to go through many processes of many workers to complete
1, material fee: iron plate, aluminum alloy, stainless steel (Different standards of material, the price difference is much).
2. Processing fee: The production cost incurred during each process in the realization of the product, such as CNC processing fee, laser processing fee, shearing bed fee, and engraving fee, Cost of fitter, Film costs, Leveling costs, stamping costs, welding and polishing costs, bending costs, assembly costs and so on.
3, the packaging fee
4, transportation costs
5, management costs
6, profit
Surface treatment
The surface treatment of sheet metal parts is also a very important part of sheet metal processing because it has the effect of preventing parts from rusting and beautifying the appearance of the product.
The surface pretreatment of sheet metal parts is mainly used to remove oil, oxide scale, rust, etc. It prepares for surface post-treatment. Several common surface treatment methods for sheet metal are: drawbench, sandblasting, baking paint, dusting, electroplating, Anodizing, screen printing.
Equipment
Sheet metal is a comprehensive cold-working process that includes shearing, punching, cutting, compounding, folding, welding, riveting, splicing, and forming.
Basic equipment includes Shear Machine, NC Punching Machine, Laser, Plasma, Laser, Plasma, Waterjet Cutting Machine)/ Combination Machine, Bending Machine.
Various auxiliary equipment: CNC bending machine, four-column hydraulic machine, desktop tapping machine, bench drilling machine, standard exchange point (convex) welding, argon arc welding machine, uncoiler, leveling machine, deburring machine, spot welding machine, drawing machine, sandblasting machines, polishing machines, bench grinders, angle grinders, electroplating baths, oxidation bath paint lines, electrostatic powder spraying equipment, etc.
