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Jiangsu Tianyuan Testing Equipment Co., LTD

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  • Customized Universal Testing Machine for Taiwan University
    Customized Universal Testing Machine for Taiwan University is successfully delivered in Dec., 2017. We received the request from Taiwan University on Nov., 2017. Customer need to customize the frame according to their limit lab space in the old-fashioned building. We had an in-depth exchange with our customer and submitted the technical solution. It was highly appreciated. Finally we delivered the universal testing machine with hydraulic wedge fixtures in Dec., 2017. Customers are very satisfied with our quality and efficency. Epsilon two-point extensometer Vane type digital display pump station Site acceptance test in Taiwan University in Jan., 2018

    2018 03/05

  • Why Choose Our Mini Injection Molding Machine
    1. High quality: Tianyuan ty-7003 micro injection molding machine adopts imported core components, AC220V+ pneumatic control + planetary servo system, small size and simple deconstruction. 2. Save space The traditional injection molding machine covers a large area and reaches more than ten meters.The ty-7003 micro-injection molding machine, which is only 1.7 meters long, is very suitable for compact laboratory use, such as university laboratory and research institute. 3. Low loss The cost of injection molding includes the total cost of the injection molding process, including: labor, electricity, raw materials, color powder, maintenance fee, etc. Jiangsu tianyuan ty-7003 micro injection molding machine can be made by injection molding for 1kg at a time, which greatly reduces the cost of raw materials and electricity in the production process. The design of small and easy mold, customers can make their own.For enterprises, it is a cost saving, and it is also an energy-saving and low-carbon environmental protection behavior for the society.

    2018 02/26

  • Universal Testing Machine Export to Iran
    Orders with Iranian customers are delivered smoothly In July 2017, our company received inquiries from Iranian customer. We recommended 600KN Hydraulic Universal Testing Machine to customer after deep communications. customer was satisfied with price and parameters. Thanks to the full preparation and effective communication in the early stage, the contract signing, payment and preparation process are all smooth. For the benefits of customer's long-distance transportation, we had specially customized extra thick wooden cases to ensure the safety of the machine, while keep the price unchanged. Customer expressed their appreciation for the service quality of Tianyuan Testing. We communicated with customer actively to guide the installation and use of the machine after receiving of goods. Since the customer has no experience, during the process of use, there will always be small problems that need to be debugged. We can respond to customers in a timely manner and be patient to guide customer. At present, our client has been able to use this universal testing machine independently. Customer is very satisfied with our quality and services.

    2018 01/18

  • New Technology New Product Appraising Meeting
    21 New Products and Technology of Jiangsu Tianyuan 21 of our new products has passed the appraising meeting by the expert group. On December 15, Jiangsu Tianyuan Equipment Co., LTD. held a new product and new technology appraisal meeting. The leaders of Yangzhou and Jiangdu Municipal Commission of Economy and Information Technology has attend the conference. Besides, there were 13 appraisal acceptance committee members from different university has been in the conference. Our customer representative and our main project leader, technical r&d personnel has attended the meeting as well. In this meeting, 21 projects, such as "electronic universal testing machine", "micro precision injection molding machine" and "automatic drop hammer test machine", have been checked and accepted. The members of the appraisal and acceptance committee have been briefed, reviewed the documents, asked the customer representatives, discussed and concluded that the 21 project technology is advanced, accurate and reliable, and the production process conforms to the relevant regulations. They think these 21 products has excellent comprehensive performance, stable quality, broad market prospect, significant economic and social benefits. The main technical performance indicators reached the domestic leading level, and all the experts agreed to pass the appraisal acceptance.

    2018 01/09

  • Material Mechanics (Part Ⅰ Overview )
    Overview of material mechanics Mechanics of materials is the limit of strain, stress, strength, stiffness, stability and the destruction of various materials under various external forces.In general, mechanical engineering and civil engineering and related majors must be taught to study material mechanics, which requires students to take advanced mathematics and theoretical mechanics.Material mechanics and theoretical mechanics, structural mechanics and three major mechanics.The research object of material mechanics is rod, beam, shaft, etc.The problem of truss structure is discussed in structural mechanics, and the problem of plate shell structure is discussed in elastic mechanics. Definition of material mechanics A branch of solid mechanics that studies the basic disciplines of structural components and the carrying capacity of mechanical parts.Its basic task is to: simple in structure and mechanical components are simplified as a one-dimensional bar, calculate stress and deformation of the rod and study the stability of the pole, to ensure that the structure can withstand the scheduled load;Select the appropriate material, section shape and size to design the safety and economic structural components and mechanical parts. In structural load bearing or mechanical movement, to ensure that each component or mechanical parts can work normally, components and parts must meet the following requirements: (1) don't break, namely has enough strength;The elastic deformation produced by the member shall not exceed the allowable scope of the project, i.e. sufficient stiffness;The equilibrium in the original shape should be stable equilibrium, which is that the component will not lose its stability.On the three aspects of strength, stiffness and stability requirements, sometimes referred to as "strength", and the mechanics of materials in the three parties face component of calculation and test, collectively known as the strength calculation and strength test. In order to ensure design safety, it is usually required to use more materials and quality materials;In order to make the design conform to economic principles, it also requires less materials and cheaper materials.One of the aims of material mechanics is to solve this contradiction reasonably and provide theoretical basis and calculation method for the design of security and economy.

    2018 01/06

  • Characteristics of ABS materials
    Characteristics of ABS materials ABS is a kind of resin with excellent comprehensive performance. It has a high impact strength and surface hardness in a wide range of temperature, and the thermal deformation temperature is higher than PA, PVC and the dimension stability is good. 1. Melt Fluidity: ABS melt's fluidity is better than PVC and PC, but worse than PE, PA and PS, similar to POM and HIPS. ABS belongs to non-newtonian fluid, and its melt viscosity is related to machining temperature and shear rate, but is more sensitive to shear rate. 2. Mechanical properties: ABS has excellent mechanical properties, and its impact strength is excellent, which can be used at extremely low temperature. Even if the ABS product is damaged, it can only be caused by tension rather than impacting. ABS has good abrasion resistance, good dimensional stability and oil resistance. So ABS can be used for making bearing under moderate load and speed. The creep properties of ABS is larger than PSF and PC, but smaller than PA and POM. The bending strength and compressive strength of ABS are poor in plastic. The mechanical properties of ABS are greatly affected by temperature. 3. Thermal performance: ABS belongs to amorphous polymer without obvious melting point; The melt viscosity is high, the liquidity is poor, the weatherability is poor, the ultraviolet ray can change color; Thermal deformation temperature is 70-107 ℃ (85), this deformation temperature can be increase 10 ℃ after annealing treatment. It is sensitive to temperature and shear rate. ABS can still show some toughness when under - 40 ℃, can be used in range of - 40-85 ℃ temperature for a long time. 4. Electrical performance: the electrical insulation of ABS is good, and it is almost impervious to temperature, humidity and frequency, and can be used in most environments. 5. Environmental performance: ABS is not affected by water, inorganic salt, alkali alcohol and hydrocarbon solvents, and the influence of many kinds of acid, but soluble in ketones, aldehydes and chlorinated hydrocarbon. ABS can be subjected to stress cracking when eroded by glacial acetic acid, vegetable oil, etc

    2017 12/25

  • Another calculation method for elastic modulus
    Another calculation method for elastic modulus When the numbers of elastic segment is small, and there's no other way to change or add it, we can use the curve method, namely check the deformation value of the curve inflection point. For example: Assume the deformation value of the inflection point of 4 mm, which take 50% of the deformation of another 2 mm. Take the force value of the 2 deformation respectively, and caulculate the elastic modulus according to following formula:

    2017 12/19

  • Dumbbell cutter, cutting knife, rubber cutting tool usage and daily maintenance
    We need to prepare different standard samples for the mechanical performance testing of polymer materials, which requires a standardized cutting knife. Proper use and maintenance can make the use of cutting knife long. Take the rubber dumbbell national standard no. 1 for example, the first step is to heat the high carbon steel first, then the second step is to cut the blank The knife edge is carefully polished to form a thick and sharp knife with a sharp edge. Usage and daily maintenance: Before cutting, pad a macromolecule material board at the bottom of the sample, it is best to smooth the surface of the nylon board, in order to prevent the stamping cutter blade in the process of the impact to the steel workbench lead to edge damage. 2. Regularly apply anti-rust oil to the blade regularly 3. The cutter is heat treatment high carbon steel, hard but afraid to fall.When using the tool, gently hold the cutter, careful not to slip off.

    2017 12/06

  • Method of test separation force (adhesived glass)
    Test schematic diagram is as follows: two pieces of glass thickness (25.4 mm wide, 76.2 mm long, 1-1.2 mm) for a 90 ° intersection, middle, shading to adhesives will stuck two pieces of glass and fixed with both ends of a piece of glass.Force on another piece of glass, separate the two pieces of glass and test the separation force.

    2017 11/29

  • Employment and Entrepreneurship Practice Base for Nanjing Tech University
    Our company is awarded the qualification of Employment and Entrepreneurship Practice Base by Nanjing Tech University. This event has great effect on the introduction of new technology talents for tianyuan instrument company. It also provides a good employment practice base for the students of mechanics major in Nanjing Tech University. Certificate issuing ceremony. Authority Certificate

    2017 11/24

  • Determination of tensile shear strength of adhesive
    1. Scope of application The method of determination of the tensile shear strength of metal bonding adhesive at room temperature is provided.This standard applies to regulations The standard test samples for preparation and testing. GB 7124-1986 is equivalent to ISO 4587-1979 "adhesives - high strength adhesives for drawing and cutting. The determination of intensity. Principle 2. The sample is a single-lap structure.The longitudinal tensile shear force is applied on the landing surface of the specimen, and the maximum of the specimen can be measured The load.The average shear stress on the lap joint is the tensile shear strength of the adhesive. 3. The device 3.1 testing machine The test machine used should make the sample damage load between 15% and 85% of the full load.The force value of the testing machine is shown The value error should not be greater than 1%. The test machine should be equipped with a sample holder with an automatic core to keep the force line consistent with the center line of the sample. The test machine shall ensure that the moving speed of the sample holder is stable at 5 mm/min. 3.2 measuring tool The measuring accuracy of the length and width of the test sample is not less than 0.05mm. 3.3 the fixture The clamping fixture should be able to ensure that the samples meet the requirements of article 4. (note: the test sample and sample holder can also be used for pin and hole connection when the metal plate is not damaged.But it cannot be used for arbitration. 4.sample 4.1 unless otherwise specified, the specimen shall conform to the shape and size of figure 1.The matching length of the standard specimen is (12.5) 0.5mm, the thickness of the sheet metal is 0.1mm and the thickness of the sheet is 0.1mm.Connect the sample The thickness of the length or the sheet of metal will affect the test results. 4. 2. Ly12-cz aluminum alloy, 1Cr18Ni9Ti stainless steel, 45 carbon steel and T2 copper are recommended. 4.The number of samples should not be less than five.The number of samples shall not be less than ten. Note: 1. For the high strength gel, if the side test results in metal material yield or damage, the thickness of metal sheet may be increased or the length of lap length can be reduced. The former is better. 2. The stress of the metal sheet during the test shall not exceed the yield strength sigma s. The thickness of the metal sheet can be calculated according to the following formula: T = lg tau sigma/s In the formula: t a sheet metal thickness, mm; L 1 specimen lap length, mm; Tensile shear strength of tau 1 adhesive, Mpa; Sigma s - yield strength of metal material, MPa. 5.Sample preparation 5.1. The sample can be prepared with no slot (as shown in figure 2) or as shown in FIG. 3 with the slot. The metal surface of the adhesive shall be flat surface, and should not be bent, warp, skew and so on.There should be no burrs, Keep the edges at right angles. 5.3 adhesion of metal pieces, the ratio of adhesives, the amount of glue, the number of glue and the time of drying, etc The curing temperature, pressure and time of adhesive can be carried out according to the use of adhesive. 5.4 preparation samples should be used with fixtures to ensure proper alignment and accurate positioning of samples. 5.5 to prevent the sample from overheating when cutting the adhesive plate, try to avoid the adhesive seams. 6. Test conditions Unless otherwise specified, the parking time and test conditions of the sample should meet the following requirements. 6.1 the shortest time to test after sample preparation is 16h, and the longest time is one month. 6.2 test shall be carried out in the environment of the temperature of 2312 ℃.An arbitration test or a sensitive adhesive for temperature and humidity Should be at a temperature of 23 and 2 ℃, relative humidity 45% ^ - 55% of the environment. 6.3 on the test of temperature requirements only, the test samples should be parked at the test temperature for less than half an hour at the test temperature;To have a The temperature and humidity requirements are tested, and the pre-test sample should not be less than 16h in the test environment. 7. Test procedures 7.1. Measure the length and width of the specimen by using the measuring sample, and accurately reach 0.05mm. 7. 2. The sample is sandwiched between the upper and lower clamps, and the distance between the holder and the holder is 50. 7. 3 start the testing machine and load it at a steady speed in 5 men 1 mm/min.Record the maximum negative of shear failure Acknowledge.Record of the type of adhesive damage (internal polymerization, adhesion destruction, metal damage). 8. Test results 8.1. The tensile shear strength of adhesive for metal bonding is calculated according to the following formula: Tau = P/B * L In the formula: the tensile shear strength of tau 1 adhesive, MPa; P - maximum load of shear failure of specimen; N; B - the width of the sample lap, mm; L - specimen lap length, mm. 8.2 test results are indicated by the arithmetic mean, maximum and minimum of shear strength.Take three valid digits. 9.Test report The test report shall include the following: A. Type and batch number of adhesive; B. Type, thickness and surface treatment of metal materials; C. The preparation method of sample preparation (without groove slab, grooved slab, single chip) and adhesive technology; D. Length of specimen lap; E. sample quantity; F. Test results (arithmetic mean, maximum, minimum); G. The type and quantity of damage of samples; H. The average thickness of the rubber layer; I. Differ from this standard.

    2018 02/09

  • Overview of comprehensive performance of ABS plastics
    General performance ABS appearance is opaque ivory grain, its products can be colorful, and has high gloss.The relative density of ABS is about 1.05, and the absorption rate is low.ABS is well combined with other materials and is easy to be printed, coated and coated.ABS has an oxygen index of 18 ~ 20, which is a flammable polymer. The flame is yellow, has black smoke and gives a special stink. Mechanical properties ABS has excellent mechanical properties, and its impact strength is excellent, which can be used at extremely low temperature.ABS has good wear resistance, good dimensional stability and oil resistance. It can be used for bearing under moderate load and rotating speed.The creep of ABS is larger than PSF and PC, but smaller than PA and POM.The bending strength and compressive strength of ABS are poor in plastic.The mechanical properties of ABS are greatly affected by temperature. The thermal performance ABS thermal deformation temperature of 93 ~ 118 ℃, the products after annealing treatment can also improve around 10 ℃.When ABS - 40 ℃ can still show some toughness, can be in to 40 ~ 100 ℃ temperature range. Electrical performance ABS has good electrical insulation and is almost impervious to temperature, humidity and frequency, and can be used in most environments. Environmental performance ABS is not affected by water, inorganic salt, alkali and a variety of acids, but soluble in ketones, aldehydes, and chlorinated hydrocarbons, which are subjected to corrosion by glacial acetic acid, vegetable oil and so on.The resistance of ABS is poor, and it is easy to degrade under ultraviolet light.After six months outdoors, the impact strength drops by half. The processing property of ABS plastic ABS is a kind of thermoplastic plastic with excellent processing performance, which can be processed by general machining methods. ABS melt fluidity is better than PVC and PC, but worse than PE, PA and PS, similar to POM and HIPS;The flow characteristics of ABS are non-newtonian fluids;The melt viscosity is related to the processing temperature and the shear rate, but is more sensitive to the shear rate. The thermal stability of ABS is not easy to be degraded.ABS has a high water absorption rate and should be dried before processing.General product drying conditions for temperature of 80 ~ 85 ℃, time of 2 ~ 4 h.The special requirements of products, such as electroplating drying conditions for temperature 70 ~ 80 ℃, time of 18 ~ 18 h.ABS products are easy to produce internal stress in processing, and the internal stress can be tested by immersion in glacial acetic acid.Such as the stress is too big and products on stress cracking is forbidden, should carry on the annealing treatment, specific conditions for put in 70 ~ 80 ℃ hot air circulation drying oven within 2 ~ 4 h, then cool to room temperature.

    2017 11/14

  • Mechanical properties
    Mechanical properties Mechanical properties of the material refers to material in the different environment (temperature, medium and humidity), under various loads (tensile, compression, bending, torsion, impact, alternating stress, etc.) as well as the mechanical characteristics of. Generally speaking, metal mechanical performance is divided into ten types: Brittle brittleness is a property that does not have plastic deformation before it is damaged. It is the opposite of toughness and plasticity. Brittle materials have no yield points, fracture strength and ultimate strength, and they are almost identical. Cast iron, ceramics, concrete and stone are brittle materials. Compared with many other engineering materials, the brittleness material has a weak performance in the stretch, and the compression test is usually used to evaluate the brittle materials. 2. Strength: the ability of metal materials to resist permanent deformation or fracture under static load. At the same time, it can be defined as proportional limit, yield strength, fracture strength or ultimate strength. No single parameter can accurately define this feature. Because the behavior of the metal changes with the variation of the stress type and its application form. Strength is a very common term. 3. Plastic: metal materials under loading produce permanent deformation and does not destroy the ability of. Plastic deformation in metallic materials under stress, after more than elastic limit and load to remove the material retained some or all of the deformation of the load. Hardness: the ability of a metal material to withstand an object that is harder than he is 5. Toughness: the ability of metal materials to resist impact loads without being destroyed. Ductility refers to the properties of metal materials that have a certain plastic deformation before the fracture occurs under the action of tensile stress. Gold, aluminum, and copper are ductile materials that can easily be pulled into wire. 6. Fatigue strength: resistance to fatigue damage caused by material parts and structural parts Elastic elasticity is a property that enables the material to return to its original size when external forces disappear. Steel is elastic before reaching the elastic limit. 8. Ductility: Refers to the characteristics of the material subjected to a certain plastic deformation before the material fracture under the action of tensile stress or compressive stress. The plastic material is generally rolled and forged. Steel is both plastic and malleable. 9. Rigid rigidity is characterized by high stress in metal materials without great strain. The rigid size is evaluated by the elastic modulus of the material. 10. Yield point or yield stress is the stress level of the metal, measured in MPa. At the yield point above, when the external load is removed, the metal deformation still exists and the metal material has plastic deformation. Mechanical properties test method GB2649-1989 Test sampling method for mechanical properties of welding joint GB2650-1989 Welding joint impact test method GB2651-1989 Method for tensile test of welding joints GB2652-1989 Method for tensile test of weld and deposition metal GB2653-1989 Welding joint bending and flattening test method GB2654-1989 Welding metal hardness test method GB2655-1989 Test method for sensitivity test of welding joint strain aging GB2656-1981 Fatigue test method for welding joints and weld metal GB11363-1989 Welding head strength test method GB8619-1989 The test method of the strength test of the strength Performance indicators Including: elastic index, hardness index, strength index, plastic index, toughness index, fatigue property, fracture toughness

    2017 11/06

  • Overview of Testing Machine
    Testing Machine is the instruments and equipment which is used to test, evaluation and research the physical properties, mechanical properties, process performance, safety performance and comfortable performance of materials, spare parts, machines (vehicles) and all kinds of engineering projects. Testing Machine is one of the most important testing instruments among scientific instruments. Testing Machine plays an irreplaceable role in the material performance testing and quality control area. Testing Machine plays an important role in ensuring the implementation of all kinds of engineering scientific theories and projects. Most of the testing machine products are also measuring instruments, which are of great importance to ensure and maintain the accuracy and traceability of length, force value and hardness value of our country. For a long time, the testing machine are widely used in metallurgy, construction, aerospace, aviation, machinery, transportation, national defense war industry, water conservancy, electric power, petroleum, chemical industry, light industry, textile and other industries, state key laboratory of industrial laboratories, measuring room, quality inspection institutions, production lines and various engineering sites as a very important scientific instruments. Research institutes, colleges and universities, quality inspection organizations and enterprises constitute the user base of the testing machine.

    2017 10/23

  • Electrical and Environmental Performance for ABS
    Electrical performance: the electrical insulation of ABS is good, and it is almost impervious to temperature, humidity and frequency, and can be used in most environments Environmental performance: ABS is not affected by water, inorganic salt, alkali and a variety of acids, but soluble in ketones, aldehydes, and chlorinated hydrocarbons, which are subjected to corrosion by glacial acetic acid, vegetable oil and so on. The resistance of ABS is poor, and it is easy to degrade under ultraviolet light. After six months outdoors, the impact strength drops by half.

    2017 10/23

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