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In August, the chairman went to various provinces for inspection
13 Jan 2021

Trip to Xiachuan Island
23 Jan 2021

At 8 o 'clock in the morning of July 25, 2020, more than 100 outstanding colleagues and relatives and friends of Xin Zhaolang Company, led by General Manager Cai, took the bus to Xiachuan Island and started the two-day unforgettable trip to Xiachuan Island.  2020 is a special year. In the first half of the year, everyone was afraid of the Coronavirus. All the employees of the company united and helped each other, and under the leadership of General Manager Cai, we safely passed the dangerous period.Coming to a more challenging time, our company organized this activity to encourage all colleagues to make persistent efforts, to fight the battle in a better state, enrich the staff's spare time life, enhance the communication and cooperation between departments, make the big family of Xin Zhaolang more harmonious, so as to better enhance the cohesion of the enterprise. The whole trip lasted for 2 days, and the whole team was always surrounded by a harmonious and warm atmosphere. Xiachuan Island, known as "China's Phuket Island", is shaded by coconut trees and has charming scenery, fine natural beaches, gentle and beautiful bays, and fascinating historical sites.  On the first day, take a luxury speedboat in the vast expanse of blue waves, the sea and sky are one color, the white waves towering sky, the carefree feeling of galloping in the south of China once again ignites your passion for travel, outline the vision of Kawandao!In the afternoon, everyone was intoxicated with the blue sky, white clouds, white spray, fine silvery white beach, the Coconut Dream Corridor full of southern sentiment, and the sea reef scenery of various forms. The next day, listening to the sound of the waves, relax and sleep until you naturally wake up.The Buddha mountain park, climb on the top of the 99 steps lie across the two pieces of natural stone: one is to climb the stone, stone cliff wide have master Mr Guan shanyue's inscription, under the look to overlook can enjoy sichuan island's most prestigious "seven star moon" landscape, another stone for sound stone, tap on a different position, will produce different sound effects, why so magical, remain

About spring
23 Jan 2021

According to the nature of the force, the spring can be divided into tensile spring, compression spring, torsion spring and bending spring, according to the shape can be divided into disc spring, annular spring, plate spring, spiral spring, cut cone coil spring and torsion bar spring, according to the production process can be divided into cold coil spring and hot coil spring.Because of the simple manufacture of ordinary cylindrical spring, and can be made into various types according to the loading situation, the structure is simple, so the most widely used.Spring manufacturing materials should generally have high elastic limit, fatigue limit, impact toughness and good heat treatment performance, commonly used carbon spring steel, alloy spring steel, stainless spring steel and copper alloy, nickel alloy and rubber, etc.Springs are made by cold winding and hot winding.Spring wire diameter is less than 8 mm with cold rolling method, more than 8 mm with hot rolling method.Some springs are made after strong pressure or shot peening processing, can improve the bearing capacity of the spring. Springs can be divided into the following 6 categories: 1. Torsional spring is a spring that bears torsional deformation, and its working part is also tightly wound into a spiral.The torsion spring end structure is machined into various shapes of torsion arms, rather than hook rings.The torsion spring uses the lever principle to twist or rotate the elastic material with soft and large toughness, so that it has great mechanical energy. 2. The tension spring is a spiral spring that bears the axial tension.When not bearing the load, the stretch spring between the ring and the ring is generally tight and no gap. 3, compression spring is under axial pressure of the spiral spring, it is used in the data section for more rounded, useful also rectangle and multi-strand steel rolled a travelling, spring is usually pitch, such as the shape of the compression spring are: cylindrical, conical, convex and concave and a small amount of noncircular, compression spring circle and circle will have a certain gap between, when under external load spring contraction deformation, deformation energy storage. 4, g

How to improve the service life of tension springs?
11 Apr 2021

In daily life, tension springs are widely used, so how to improve the service life of tension springs? 1. Austempering of tension spring. For springs with a relatively small diameter or satisfactory hardenability, austempering can be selected, which can not only reduce decentering, but also improve its resistance. After austempering, it is best to perform another tempering, which can increase the limit of elasticity. It should be noted that the tempering temperature should be the same as the austempering temperature. 2. Deformation heat treatment. Thermomechanical heat treatment is mainly to combine the deformation strengthening of steel with heat treatment strengthening, so as to further improve the strength and resistance of steel. Thermomechanical heat treatment can be divided into high temperature, medium temperature and low temperature. High temperature thermomechanical heat treatment is formed in a stable condition, and then it should be quenched immediately, or it can be combined with casting or hot rolling, that is, quenching immediately after hot forming. 3. The tension spring should be slack after quenching and tempering. The spring works under the action of external force for a long time, because the stress is slack, it will produce a small amount of permanent (plastic) deformation, especially the high-temperature working spring, the stress slack phenomenon is more serious at high temperature, so that the accuracy of the spring is reduced. It is not allowed for precision springs. Therefore, the tension spring should be slackened after quenching and tempering. Heat treatment process: Load the tension spring in advance, so that its deformation exceeds the deformation that may occur during operation of the spring. Then heat it at 20°C higher than the operating temperature for 8-24 hours. 4. Shot peening. Tension springs have higher requirements for surface quality. Surface defects such as scratches, folding, oxidative decarburization, etc. tend to become stress collection places and fatigue cracking sources during spring operation. Shot peening is one of the most widely used methods to improve the surface quality of springs. If fine steel sho