One of the necessary working conditions for the calendering process: the friction angle ρ between the rubber material and the roller must be greater than the contact angle α, so that the rubber material will be pulled into the roller gap. During the calendering process of the four-roller calender, the rollers work at a certain speed ratio to further knead the rubber material and increase its plasticity. Finally, it is calendered to a certain thickness and width through the minimum roller distance. The film is squeezed onto the textile or steel cord under the action of the roller's squeezing force. Some need to be pressed into certain patterns and shapes, and some need to combine multiple layers of film with different uses, colors, and shapes.
The High And Low Temperature Tensile Testing Machine Can Automatically Calculate The Maximum Test Force Value, Breaking Force Value, Yield Strength, Upper And Lower Yield Strength, Tensile Strength, Compressive Strength, Fracture Elongation, Tensile Strength, Etc. According To Gb, Jis, Astm, Din, Iso And Other Standards. Test Data Such As Tensile Elastic Modulus And Bending Elastic Modulus. It Is Suitable For Tensile Testing Of Rubber, Plastics, Textiles, Waterproof Materials, Wires And Cables, Mesh Ropes, Metal Wires, Metal Rods, Metal Plates And Other Materials. Additional Accessories Can Be Added For Compression And Bending Tests. High And Low Temperature Tensile Testing Machine 
The structure of the bicycle is divided into basic parts and auxiliary parts. Basic components: frame, front fork, handlebar, front and rear axle, chain, flywheel, saddle, brake and other 16 components. Auxiliary parts: chain cover, hanger, bracket, car bell, car lock and other 9 parts. The above structures can be tested with the corresponding testing machine in a targeted manner. Frame rear triangle fatigue testing machine 
Free drop testing machine is also called mobile phone drop testing machine, suitable for all kinds of bottles and mobile phones, batteries, chargers, adapters, walkie-talkies, electronic dictionaries, apartment intercom phones, CDS, MD, MP3 and other small consumer electronic products and parts of the free drop test products. Small Drop Tester 
The acceleration impact testing machine is used to measure and determine the impact resistance of the product or package, and assess the functional reliability and structural integrity of the test product in the impact environment. The impact test of conventional half-sine wave, post-peak sawteeth, trapezoid wave and other waveforms can be performed to realize the impact and impact energy suffered by the product in the actual environment, so as to improve the system or optimize the packaging structure of the product. The impact test index is: the peak impact acceleration can reach 5000-50000m/s2, and the acceleration duration is 0.2-1ms. You can understand the impact resistance of your products and the use environment according to the impact test results. Acceleration Shock Testing Machine 
After the battery is fully charged according to the test method of 4.5.1 specifications, install the battery on the surface of the platform, and place a metal rod with a diameter of 1.58mm±0.2mm horizontally on the upper surface of the geometric center of the battery. A weight with a mass of 9.1kg±0.1kg is used to hit the surface of the battery with a metal rod from a height of 610mm±25mm in free fall and observe it for 6h. Battery Weight Impact Testing Machine 
Battery heat abuse test box, mainly in the automotive, aerospace, transportation, electronic products and other industries, these industries are faced with a short period of high temperature conditions, so the battery requirements are higher, requiring the battery to withstand high temperature without fire and explosion, battery heat abuse test box can be a good test whether the battery is qualified, but also greatly reduce the daily use of battery safety risks.
This product is mainly used for balance measurement and weight removal of automobile brake discs. The feature of this product is that the balance measurement and milling weight removal of the workpiece can be completed on the same equipment. This product has high production efficiency and is convenient for measuring and removing weight. Equipped with different fixtures, it can meet the needs of various specifications, and is suitable for the batch production of products and the production of single pieces. Milling Deweighting Dynamic Balancing Machine 
Product features:
The high-speed, high-precision, and powerful professional-grade automatic image measuring instrument of automatic imaging technology can realize precise measurement of the contour, apparent size, angle and position of various complex and precise parts. The best choice, with automatic software, can realize automatic programming, based on CAD digital-analog measurement, it is a fully automatic imaging instrument for high-end applications in China. Gantry Image Measuring Instrument 
Manual secondary element measuring instrument, widely used in machinery, electronics, mold, injection molding, hardware, rubber, low voltage electrical appliances, Magnetic materials, precision hardware, precision stamping, connectors, connectors, terminals, mobile phones, home appliances, computers (computers), liquid crystal TV (LCD), printed circuit boards (PCB), automobiles, medical devices, watches, instruments, screws, springs, gears, cams, threads, radius template, thread template, wire and cable, tools, bearings, stamping parts Screen, test screen, cement screen, mesh plate (steel mesh, SMT template), etc. Manual Two-dimensional Measuring Instrument 
This machine is mainly suitable for metal, non-metal and composite materials tensile and low frequency cyclic tensile test mechanical properties, can realize the stress, strain, speed and other combination command control. According to GB, JIS, ASTM, DIN and other standards automatically obtain the maximum test force value, yield strength, yield point up and down, tensile strength, number of cycles and other parameters, automatically generate test report format, and can print test report curve at any time. Microcomputer Controlled Low Frequency Cyclic Tensile Testing Machine 
Electromagnetic vibration table is widely used in defense, aviation, communications, electronics, automobiles, home appliances, and other industries. This type of equipment is used to find early faults, simulate actual working conditions and structural strength tests. Sine wave, FM, time control Power Frequency Shaker 
It is mainly used for testing dynamic and static mechanical properties of various materials, parts, elastomers, shock absorbers and components. Tensile, compression, bending, low cycle and high cycle fatigue, crack propagation and fracture mechanics tests can be carried out under sine wave, triangle wave, square wave, trapezoidal wave and combination waveform. Environmental test device can also be configured to complete environmental simulation test at different temperatures. Electro-hydraulic Servo Fatigue Testing Machine 
This machine is suitable for testing the dynamic and static mechanical properties of all kinds of metal, non-metal, composite material and lithium battery core pole. Tensile, compression, bending, static and static stiffness and low cycle fatigue tests can be carried out under sine wave, triangle wave, square wave, trapezoidal wave, random wave and combined waveform. Electronic Dynamic Testing Machine 
The theme of this conference is "Core Ties, New Future", focusing on new markets, products, and technologies in the industry. Three main forums will be held: Summit Forum, High Quality Development Entrepreneurs Summit, and Innovation and Application Summit; Parallel forums such as the Yangtze River
Thank you for your strong support and love for our company, which has allowed us to move forward and develop steadily. In order to meet the market demand, the company is now expanding the production scale. From November 15, 2020, the production plant has been relocated to: No. 5, Mulun Industrial 2n
Hongjin Company participated in Shenzhen Semiconductor Exhibition Hongjin company participated in the semiconductor exhibition held in Shenzhen. The main products displayed are: thermal shock test chamber, HAST high pressure accelerated aging test chamber, PCT high pressure accelerated aging test
Today, old customers from Iran visited our company, visited 8 production workshops of our company, visited the exhibition hall,As well as the office, they complimented our precision ovens and decided on the spot to order 2 double door precision ovens. Thank you Iranian customers for their support to
