What does Wujinjiaodian include, and what does Wujinjiaodian’s business scope include?

The business scope of Wujinjiaodian includes:

In the general business scope, we can fill in the sales of mechanical equipment, electronic equipment, building materials, etc., among which Wujinjiaodian is also included. It is subject to the approval of the Industrial and Commercial Bureau. Among hardware products, they are usually divided into two categories: large hardware and small hardware.

Among them, large hardware mainly refers to steel plates, steel bars, flat iron, universal angle steel, channel iron, I-beam iron and various types of steel materials. Small hardware includes construction hardware, tinplate, and lock iron. Nails, wire, steel mesh, wire cutters, household hardware, various tools, etc.

Based on the nature and use of hardware, it can be divided into eight categories: steel materials, non-ferrous metal materials, mechanical parts, transmission equipment, auxiliary tools, work tools, construction hardware, and household hardware. Wujinjiaodian is actually an informal name.

Wujinjiaodian’s business scope includes:

Wujinjiaodian mainly includes lock hardware, door and window hardware, home decoration hardware, bathroom hardware, and kitchen hardware.

1. Lock hardware includes: exterior door locks, handle locks, drawer locks, ball door locks, glass showcase locks, electronic locks, chain locks, anti-theft locks, bathroom locks, padlocks , combination lock, lock body, lock core.

2. Door and window hardware includes: hinges, hinges, tracks, latches, door suckers, floor suckers, floor springs, door clips, door closers, and plate pins.

3. Home decoration hardware includes: wash basin faucet, washing machine faucet, delay faucet, shower head, soap dish holder, single cup holder, double cup holder, paper towel holder, toilet brush holder, Single pole towel rack, single-layer storage rack, multi-layer storage rack, bath towel rack, hanging mirror, soap dispenser.

4. Kitchen hardware includes: kitchen cabinet baskets, kitchen cabinet pendants, sinks, sink faucets, and scrubbers.

Extended information:

The hardness of metal stamping parts is tested using a Rockwell hardness tester. Small stamping parts with complex shapes can be used to test small surfaces that cannot be tested on ordinary benchtop Rockwell hardness testers.

PHP series portable surface Rockwell hardness tester is very suitable for testing the hardness of these stamping parts. Alloy stamping parts are the most commonly used parts in the fields of metal processing and machinery manufacturing. Stamping parts processing is a processing method that uses molds to separate or form metal sheets and strips. Its application range is very broad.

Stamping parts processing includes punching, bending, drawing, forming, finishing and other processes. The materials processed by stamping parts are mainly hot-rolled or cold-rolled (mainly cold-rolled) metal strip materials, such as carbon steel plates, alloy steel plates, spring steel plates, galvanized plates, tin-plated plates, stainless steel plates, copper and copper alloys Plate, aluminum and aluminum alloy plate, etc.

1. Hardness testing of stamping parts materials

The main purpose of hardness testing of stamping parts materials is to determine whether the annealing degree of the purchased metal sheet is suitable for the subsequent stamping parts processing and different types of stamping parts processing processes. , requiring plates with different hardness levels.

Aluminum alloy plates used for stamping parts processing can be tested with a Webster hardness tester. When the material thickness is greater than 13mm, a Barcol hardness tester can be used instead. Pure aluminum plates or low-hardness aluminum alloy plates should use a Barcol hardness tester. .

2. Hardness testing of stamping molds

The main material of stamping molds is mold steel (including tool steel and high-speed steel), and sometimes cemented carbide is used.

Stamping parts molds usually require high hardness and wear resistance, and heat treatment is essential.

Mechanical properties refer to the characteristics of metal materials under the action of external forces.

1. Strength: The ability of a material to resist deformation and fracture under the action of external force (load). The load per unit area of ??a material is called stress.

2. Yield point (бs): It is called yield strength. It means that when the stress on the material reaches a certain critical value during the stretching process, the load no longer increases but the deformation continues to increase or 0.2L is generated. Time stress value, expressed in Newton/mm2 (N/mm2).

3. Tensile strength (бb), also called strength limit, refers to the maximum stress that a material can withstand before breaking.

The unit is expressed in Newton/mm2 (N/mm2).

4. Elongation (δ): the percentage of the total elongation of the material after tensile rupture to the original gauge length.

5. Section shrinkage (Ψ) is the percentage of the maximum reduced area of ??the section of the material after tensile fracture to the original section area.

6. Hardness: refers to the ability of a material to resist the pressure of other harder objects on its surface. Commonly used hardnesses are measured according to their ranges: distribution hardness (HBS, HBW) and Rockwell hardness (HKA, HKB, HRC).

7. Impact toughness (Ak): The ability of a material to resist impact load, in Joules/cm2 (J/cm2).

Reference: Baidu Encyclopedia - Hardware