Advantageous supply of HIMMEL motor K75-SP/2+M12K

Advantageous supply of HIMMEL motor K75-SP/2+M12K

Advantageous supply of HIMMEL motor K75-SP/2+M12K

Jiangsu Qiucheng Electromechanical Co., Ltd

Professional procurement of European industrial control products and spare parts.

Advantages of Supply Brands and Models: Wurth Hardware Tools and Chemicals, Hahn Cooper, Gaimi Valves, Schmeisser Switches, IMM Nozzles, Ergowiss Hydraulic Lift Systems, Socla Valves, Kobold Flow Meter Switches, SBS Balancing Devices, ODU Connectors, SCHURTER Filters, AMF Fixtures, Phoenix Wig Miller Terminal Connectors, Bentley Envision Module Cards, etc

Our advantages:

1) Purchase directly from the manufacturer to ensure that all products are original.

2) Reasonably priced, bypassing layers of agents, maximizing discounts to customers.

3) We have a wide range of channels, with agents in China or customers protecting manufacturers from selling products. As long as you can provide the model, we can also purchase from distributors in various countries.

4) The warehouse ships consolidated shipments every Wednesday, greatly saving logistics costs.

5) Engineers provide you with professional pre-sales and after-sales technical consulting services.

Jiangsu Qiucheng Electromechanical Co., Ltd. is a modern enterprise that integrates research and development, engineering, sales, and technical services. It is a competitive equipment supplier in the field of automation in China. The company mainly deals in industrial automation products such as mechatronics equipment, high-precision analytical and testing instruments, environmental and new energy industrial equipment, and electric tools from developed countries such as Europe, America, Japan, and South Korea.

Modern welding technology can produce welds without internal or external defects, with mechanical properties equal to or even higher than those of the connected body. The mutual position of the welded body in space is called a welded joint, and the strength at the joint is not only affected by the quality of the weld seam, but also by its geometric shape, size, stress situation, and working conditions. The basic forms of joints include butt joint, lap joint, T-joint (positive joint), and corner joint.

The cross-sectional shape of the butt joint weld is determined by the thickness of the welded body before welding and the groove form of the two joint edges. When welding thicker steel plates, various shapes of grooves are cut at the joint to facilitate the insertion of welding rods or wires. The groove forms include single-sided welding groove and double-sided welding groove. When choosing the groove form, in addition to ensuring full penetration, factors such as easy welding, less filler metal, small welding deformation, and low groove processing costs should also be considered.

When two steel plates with different thicknesses are joined together, in order to avoid severe stress concentration caused by sharp changes in cross-section, the thicker plate edge is often gradually thinned to achieve equal thickness at the two joint edges. The static strength and fatigue strength of the docking joint are higher than those of other joints. Welding of butt joints is often preferred for connections working under alternating, impact loads, or in low-temperature and high-pressure vessels.

The pre welding preparation work for lap joints is simple, easy to assemble, and the welding deformation and residual stress are small. Therefore, it is often used in the installation of joints and unimportant structures on construction sites. Generally speaking, lap joints are not suitable for working under conditions such as alternating loads, corrosive media, high or low temperatures.

The use of T-joints and corner joints is usually due to structural requirements. The working characteristics of fillet welds on T-joints that are not fully penetrated are similar to those of fillet welds on lap joints. When the weld seam is perpendicular to the direction of external force, it becomes a positive angle weld seam, and the surface shape of the weld seam will cause varying degrees of stress concentration; The stress situation of the welded fillet weld is similar to that of the butt joint.

Corner joints have low load-bearing capacity and are generally not used separately. They are only improved when welded through or when there are corner welds both inside and outside. They are mostly used at the corners of enclosed structures.

Welded products are lighter in weight than riveted parts, castings, and forgings, which can reduce their own weight and save energy for transportation vehicles. The welding has good sealing performance and is suitable for manufacturing various types of containers. Developing joint processing technology, combining welding with forging and casting, can produce large and economically reasonable cast welded and forged welded structures with high economic benefits. The use of welding technology can effectively utilize materials, and welding structures can use materials with different properties in different parts, fully utilizing the strengths of various materials to achieve economy and high quality. Welding has become an increasingly important processing technique in modern industry.

In modern metal processing, welding developed later than casting and forging processes, but its development speed was very fast. The weight of welded structures accounts for about 45% of steel production, and the proportion of aluminum and aluminum alloy welded structures is also increasing.

The future welding technology requires the development of new welding methods, welding equipment, and welding materials to further improve welding quality and safety reliability, such as improving existing welding energy sources such as arc, plasma arc, electron beam, laser, etc; By utilizing electronic and control technologies, we aim to improve the process performance of electric arcs and develop reliable and lightweight arc tracking methods.

On the other hand, we need to improve the level of welding mechanization and automation, such as implementing program control and digital control for welding machines; Develop a specialized welding machine that automates the entire process from preparation, welding, to quality monitoring; Promoting and expanding CNC welding robotic arms and welding robots on automatic welding production lines can improve the level of welding production and enhance welding hygiene and safety conditions.

evolution process

Welding technology emerged with the smelting and production of metals such as copper and iron, as well as the application of various heat sources. The main welding methods in ancient times were casting welding, brazing, forging welding, and riveting welding. 2500 BC ago, the Babylonians and Indus civilizations had already reached a high level of hot and cold processing of copper and iron metals, and were able to manufacture metal utensils using welding methods such as forging and casting, and engraved with text. The representative culture at this time is the Harappan culture.

The iron edged copper axe made in the Shang Dynasty of China is a cast and welded piece of iron and copper, with a surface where the fusion line between copper and iron is winding and well joined. During the Spring and Autumn Period and the Warring States Period, there were many coiled dragons on the bronze pedestal of Jiangu in the tomb of Marquis Yi of Zeng, which were connected by segmented brazing. After analysis, the composition used is similar to that of modern soft solder. During the Warring States period, the blade was made of steel and the back of the blade was made of wrought iron, usually forged and welded by heating. According to the book "Tian Gong Kai Wu" written by Song Yingxing during the Ming Dynasty, in ancient China, copper and iron were heated together in a furnace and forged into knives and axes; Sprinkle yellow mud or finely sieved Chenjiubi soil on the interface and weld large ship anchors in sections. In the Middle Ages, weapons were also made by forging and welding in Damascus, Syria.

Modern development

The ancient welding technology remained at the level of casting welding, forging welding, brazing, and riveting welding for a long time. The heat source used was furnace fire, which had low temperature and energy concentration, and could not be used for welding large section and long welded workpieces. It could only be used to make decorations, simple tools, household appliances, and more.

In the early 19th century, Davis of England discovered two high-temperature heat sources that could locally melt metals: electric arcs and oxyacetylene flames; From 1885 to 1887, Bernados invented carbon electrode arc welding tongs; Aluminum thermal welding appeared again in 1900. At the beginning of the 20th century, carbon electrode arc welding and gas welding were applied, and thin coated electrode arc welding also emerged. The arc was relatively stable, the welding pool was protected by slag, and the welding quality was improved, making manual arc welding enter the practical stage. Since the 1920s, arc welding has become an important welding method. It also became the beginning of the development of modern welding technology. During this period, Noble in the United States used arc voltage to control the speed of electrode delivery, creating an automatic arc welding machine, which became the beginning of welding mechanization and automation. In 1930, Robinov of the United States invented submerged arc welding using welding wire and flux, further developing the mechanization of welding. In the 1940s, in order to meet the welding needs of aluminum, magnesium alloys, and alloy steels, tungsten electrode and melting electrode inert gas shielded welding were successively introduced.

In 1951, the Soviet Union's Barton Electric Welding Research Institute created electric slag welding, which became an efficient welding method for thick workpieces. In 1953, Lyubovsky and others from the Soviet Union invented carbon dioxide gas shielded welding, which promoted the application and development of gas shielded arc welding, such as the emergence of mixed gas shielded welding, flux cored wire gas slag combined shielded welding, and self-protection arc welding. In 1957, Gage invented plasma arc welding in the United States; The electron beam welding invented by Germany and France in the 1940s was also put into practical use and further developed in the 1950s; In the 1960s, the emergence of laser welding plasma, electron beam, and laser welding methods marked a new development in high-energy density fusion welding, greatly improving the weldability of materials and enabling the welding of many materials and structures that were difficult to weld using other methods.

Other welding techniques include resistance welding invented by Thompson in 1887 in the United States, which was used for spot welding and seam welding of thin plates; Seam welding is the earliest semi mechanized welding method in pressure welding. As the seam welding process progresses, the workpiece is pushed forward by two rollers; Flash butt welding method was used to weld bars and chains starting from the 1920s. At this point, resistance welding has entered the practical stage. In 1956, Jones of the United States invented ultrasonic welding; Chudikov of the Soviet Union invented friction welding; In 1959, the Stanford Research Institute in the United States successfully conducted research on explosive welding; In the late 1950s, the Soviet Union produced vacuum diffusion welding equipment.

development trend

The development trend of welding technology 1. Improving welding productivity is an important driving force for promoting the development of welding technology

There are two ways to improve productivity: firstly, to increase the welding deposition rate, such as three wire submerged arc welding, with process parameters of 220A/33V, 1400A40V, and 1100A45V. By using a small groove section and setting up a baffle or liner at the back, 50-60mm steel plates can be fully welded in one go, with a welding speed of over 0.4m/min. The deposition rate is over 100 times higher than that of electrode arc welding. The second approach is to reduce the groove section and metal deposition,

The outstanding achievement is narrow gap welding. Narrow gap welding is based on gas shielded welding, using single wire, double wire, or triple wire for welding. Regardless of the thickness of the joint, butt welding can be used. For example, if the thickness of the steel plate is 50-300mm, the gap can be designed to be about 13mm. Therefore, the required amount of deposited metal is reduced by several times or tens of times, greatly improving productivity. The main technical key of narrow gap welding is to ensure the fusion of both sides and the automatic tracking of the arc center on the groove centerline. Therefore, various countries around the world have developed different schemes, resulting in the emergence of various narrow gap welding methods.

With a professional technical and business team, the company not only brings high-quality products to customers, but also provides automation engineering technology services and complete solutions.