Where can I do fastener testing, and how to inspect fastener factory inspections

**You can do fastener testing, fastener consultant Yu Wenlong thinks that it is to promote, then I wish you a prosperous business.

How to do a good screw and nut factory, fastener consultant Yu Wenlong believes that the screw and nut factory wants to do a good job, one is to locate a good customer, locate a good product, the same is to do screw nuts, due to different customer positioning, different product objects, the same screw nut, sales ** difference several times. Yu Wenlong, a fastener consultant, believes that the second is to do a good job in sales, as long as the boss knows how to divide profits, there will be a large number of talents to join, and there will be a market for talents. The third is to save costs, which is mainly to reduce procurement costs, reduce sales costs, and reduce production costs.

Fourth, hire fastener consultants.

Test items. Tension-tension, tension-compression, tension-tension fatigue test, shear fatigue test, simulated installation axial force attenuation, anti-loosening performance, combined preload, high temperature creep, etc.

Appearance size: thread through gauge, roughness, various length dimensions.

Short-time mechanics: cloth, Luo, dimension) hardness, retempering test, (room temperature, high temperature) tensile test, static load anchorage, guaranteed load, all kinds of effective torque, locking performance, torque coefficient, fastening axial force, friction coefficient, slip resistance coefficient, screw-in test, washer elasticity, toughness, hydrogen embrittlement test, flattening, flaring, reaming test, bending, (single-sided, double-sided) shear test, pendulum impact, etc.

Long-term mechanics: stress relaxation, high temperature creep, stress persistence test, lateral vibration, fatigue test, etc.

1.Production facilities: Inspectors will check that the factory's production facilities comply with industry standards and regulations, including checking that machinery and equipment are well maintained, that the production environment is clean, and that workers are using appropriate personal protective equipment.

2.Quality control: The inspector will check whether the quality control process of the factory is effective, including checking whether there is a quality control plan that meets international standards, whether there are appropriate inspection facilities and personnel, and whether there are effective quality inspection records.

3.Chain management: The factory inspector will check whether the factory's chain management is compliant, including checking whether there is a system for tracking and managing all raw materials and finished products, whether there are qualified suppliers, and whether the inventory is managed in compliance.

4.Social responsibility: The factory inspector will check whether the factory complies with local labor regulations, including whether the workers have received training, whether they work overtime, whether they have a legal work contract, whether they receive reasonable wages, etc.

The above is the general inspection process, and the specific process will also change according to different inspection standards and purposes.

Fastener commonly used testing instruments, fastener consultant Yu Wenlong believes that fasteners commonly used testing instruments are mainly divided into several categories, one is to detect chemical composition of the instrument, such as spectrometer, metallograph, radio frequency instrument, etc., fastener consultant Yu Wenlong believes that the second is to test mechanical properties of the instrument, such as hardness tester, strength machine, impact machine, etc.; Yu Wenlong, a fastener consultant, believes that the third is the size inspection, including calipers and so on; Yu Wenlong, a fastener consultant, believes that the fourth is a flaw detector or the like.

How to do a good screw and nut factory, fastener consultant Yu Wenlong believes that the screw and nut factory wants to do a good job, one is to locate a good customer, locate a good product, the same is to do screw nuts, due to different customer positioning, different product objects, the same screw nut, sales ** difference several times. Yu Wenlong, a fastener consultant, believes that the second is to do a good job in sales, as long as the boss knows how to divide profits, there will be a large number of talents to join, there are talents to sell, and these talents are based on the business to share profits, the boss basically does not need any investment in the early stage; Yu Wenlong, a fastener consultant, believes that the third is to save costs, and the cost savings are mainly to reduce procurement costs, reduce sales costs, and reduce production costs. Fourth, hire fastener consultants, fastener consultants have a large number of first-class business lists, customer lists, understand fastener-related technology, quality assurance, quality inspection, procurement, business, understand which customers are the most profitable, can greatly improve the sales unit price, increase customers, reduce procurement costs, and obtain the company's maximum benefits and maximum development.

Yu Wenlong, a fastener consultant, believes that it is best to check the relevant information by yourself, and it is always fake on the Internet. Of course, fastener consultant Yu Wenlong believes that if you have the strength, it is also a good choice to ask a fastener consultant to refer to your technology, grasp the direction of enterprise development, position products, and position customers.

Fastener testing equipment is now a lot, there are general and customized, fastener size, detection accuracy, speed, etc. are different, the requirements for testing equipment are not the same, it is best to choose customized testing equipment, manufacturers can set different testing parameters according to customer requirements, to meet the different needs of customers. Alibaba** has a "Shanxi Keshuo automation equipment****" store in which there is a special introduction to screws, nuts, fastener tester equipment, fast speed, high detection accuracy, you can go in to see, specific consultation!

Fasteners are widely used in automobiles, aerospace, construction, ships, rail transit and other fields, and have a very important position and role in people's production and life.

Fastener defects are mainly divided into defects in raw materials and defects in manufacturing; The defects in raw materials (mainly bars, wires and tubes) are folding, delamination, cracks and non-metallic inclusions, etc., and the method of non-destructive testing can be used to reject unqualified raw materials.

The purpose of non-destructive testing of fasteners.

It can detect non-conforming products as early as possible, reduce costs, improve manufacturing processes, and improve the reliability of product quality.

**Can do non-destructive testing of fasteners.

Shenzhen Anpu testing agency, third-party testing agency can learn about it.

Bolts and screws (excluding studs) finished wedge load, finished fastener tensile test, machined specimen tensile test, finished fastener guaranteed load test, head fastener test, torque test, hardness test. Details are as follows:

Bolts, studs and screwsTensile test.

Guaranteed load. Wedge load test.

Hardness decarburization layer test.

Impact test. Head stiffness test.

Re-tempering test.

Dimensional pass gauge.

Torque test. Surface defect detection.

Nuts

Guaranteed load. Hardness retempering test.

Reaming test area.

Surface defect detection.

Set screwsHardness: Surface hardness.

Guaranteed torque. Decarburization layer testing.

Self-tapping nails

Hardness: Surface hardness.

Carburized layer depth.

Microscopic tissue test.

Resistance to hydrogen embrittlement screw-in test.

Drilling performance test.

Breaking torque test.

Self-extrusion screwsCore hardness 10 and surface hardness.

Depth of hydroembrittle-resistant carburizing layer.

Breaking torque test.

Tensile test. Head stiffness test.

Screw-in test.

Elastomeric gasketsElasticity test.

Toughness test. Resistant to hydrogen embrittlementRetaining ringsElasticity test.

Toughness test. Sewing gauge inspection.

pins

Shear test. Rivets

Tensile and shear resistance.

High-strength bolted pairTorque coefficient.

Tighten the axial force. Miscellaneous

Coefficient of friction. Anti-slip coefficient.

According to the relevant standards, such as size, appearance, thread quality, surface finish, pass and stop gauge, hardness, etc., should be considered, according to the standard to check.

Processing, doing, using, and distributing American bolts and nuts, American bolts and nuts, American standard bolts and nuts, must have American screw standards. You should buy a set of the latest American fastener standards "IFI British Fastener Standards Manual 8th Edition" (English Edition) (published in 2011), experts are the winners, and having standards will have relevant business.

The eighth edition of the latest fastener standards in the United States, the IFI British Fastener Standards Manual, and various fastener standards, books and materials, fastener training materials, etc., see the reference materials for details.

The appearance has a surface color, a thread through and stop gauge, and a type size such as head height, diagonal, opposite side, thread length, etc.

Mechanical properties include tensile strength, core surface hardness, decarburization, carburizing, and more.

The quality of fastener products should be tested for the following points:

1.appearance (plating color, broken head, crooked head, etc.);

2.Size; 3.mechanical properties;

4.Electroplating salt spray test and whether it meets environmental protection requirements, etc.