Hardware and electricity business scope includes:
General business scope we can fill in the sales of machinery and equipment, electronic equipment, construction materials, etc., which also has hardware and electricity, these are approved by the Industrial and Commercial Bureau shall prevail. In hardware products, usually only divided into two categories of large hardware and small hardware.
The big hardware mainly refers to steel plate, steel bar, flat iron, universal angle, channel iron, I-beam iron and various types of iron and steel materials, small hardware, including architectural hardware, white iron, locks, nails, wire, steel wire, steel wire cutters, household hardware, various tools and so on.
From the nature of the hardware and the use of the division, and can be divided into iron and steel materials, non-ferrous metal materials, mechanical parts, transmission equipment, auxiliary tools, tools, construction hardware, home hardware and other eight categories. And hardware and electricity is actually an informal call.
Hardware and electricity business scope includes:
Hardware and electricity mainly includes locks hardware, doors and windows hardware, home decoration hardware, bathroom hardware, kitchen hardware.
1. Lock hardware includes: exterior door locks, handle locks, drawer locks, ball door locks, glass window locks, electronic locks, chain locks, anti-theft locks, bathroom locks, padlocks, number locks, locks, locks.
2.? Door and window hardware also includes: hinges, hinges, tracks, pins, door suction, floor suction, floor springs, door clamps, door closers, plate pins.
3. Home decoration small hardware category includes: sink faucet, washing machine faucet, delay faucet, shower, soap dish rack, single cup holder, double cup holder, paper towel holder, toilet brush holder, single rod towel rack, single shelf, multi-layer shelf, bath towel rack, hanging mirror, soap dispenser.
4. Kitchen hardware including: kitchen cabinet pull-outs, kitchen cabinet hangers, sinks, sink faucets, scrubbers.
Expanded Information:
. p>Hardness testing of hardware stampings is done with Rockwell hardness testers. Small, stamped parts with complex shapes can be used to test the plane is very small and can not be detected on the ordinary bench Rockwell hardness tester.
PHP series portable surface Rockwell hardness tester is very suitable for testing the hardness of these stampings. Alloy stamping parts are the most commonly used parts in the field of metal processing and machinery manufacturing. Stamped parts processing is the use of molds to make the metal plate and strip separation or shaping of processing methods. Its application range is very broad.
Stamping parts processing includes punching, bending, deep drawing, forming, finishing and other processes. Stamped parts processing materials are mainly hot-rolled or cold-rolled (mainly cold-rolled) metal sheet and strip materials, such as carbon steel plate, alloy steel plate, spring steel plate, galvanized plate, tin-plated plate, stainless steel plate, copper and copper alloy plate, aluminum and aluminum alloy plate and so on.
1. Hardness testing of stamping materials
The main purpose of hardness testing of stamping materials is to determine whether or not the annealed degree of the purchased sheet metal is suitable for the subsequent stamping process to be carried out, and different types of stamping processes require different levels of hardness of the sheet material.
Aluminum alloy plate used for stamping parts processing can be tested with the Wechsler hardness tester, the material thickness is greater than 13mm can be changed to use the Pasteur hardness tester, pure aluminum plate or low hardness aluminum alloy plate should be used Pasteur hardness tester.
2, stamping die hardness test
The main material of the stamping die is die steel (including tool steel and high-speed steel), and sometimes also use carbide.
Stamping die usually requires high hardness and wear resistance, heat treatment is essential.
Mechanical properties are the characteristics of the metal material under the action of external forces.
1, strength: the material in the role of external forces (load), the ability to resist deformation and fracture. Material unit area subject to load called stress.
2, yield point (бs): yield strength, refers to the material in the process of stretching, the material subjected to stress reaches a certain critical value, the load no longer increase deformation but continue to increase or produce 0.2% L when the stress value, the unit of newton / millimeter 2 (N / mm2) said.
3, tensile strength (бb) also called strength limit refers to the maximum stress value of the material before pulling off. Unit with newton/mm2 (N/mm2) said.
4, elongation (δ): the material in tensile fracture, the total elongation and the percentage of the original scale length.
5, section shrinkage (Ψ) material in the tensile fracture, the section of the maximum shrinkage area and the percentage of the original fracture area.
6, hardness: refers to the resistance of the material to other harder things pressure on its surface, commonly used hardness according to its range of determination of distribution of hardness (HBS, HBW) and Rockwell hardness (HKA, HKB, HRC).
7, impact toughness (Ak): the ability of the material to resist the impact load, the unit is joule/cm2 (J/cm2).
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