Abstract: The degree of mold standardization and application level are important indicators of the level of mold industry. Molds are specialized forming tools. Although they are highly personalized, they are also industrial products. Therefore, standardization is very important.

The degree of standardization and level of application of molds to inform the role of industry websites and promote industry information is an important indicator of the level of the mold industry. Molds are specialized forming tools. Although they are highly personalized, they are also industrial products. Therefore, standardization is very important. In countries where industry is more developed, importance is attached to standardization because it brings quality, efficiency, and efficiency to industry. Such as Japan, the United States, Germany, mold standardization work has been nearly 100 years of history, the formulation of mold standards, the production and supply of mold standard parts has formed a complete system. The survival and development of the mold standard parts industry in China is facing serious challenges. However, as long as we unite and unite in one heart, we must face the reality, speed up reforms, seize opportunities, meet challenges, survive in competition, and rely on advancements in science and technology, convinced that in the near future, China's mold standard parts industry will take root. The revolution will usher in a better tomorrow.

The mold standard part is an important part of the mold and it is the basis of the mold. It has very important technical and economical significance for shortening the mold design and manufacturing cycle, reducing the mold production cost, and improving the mold quality. The experience of foreign industrialized countries proves that the professional production and commercial supply of mould standard parts has greatly promoted the development of the mould industry. The wide application of standard parts can shorten the design and manufacturing cycle by 25-40%; it can save social hours due to user-made standard parts and reduce the waste of raw materials and energy; it can lay a foundation for the application of modern technologies such as mold CAD/CAM; Can significantly improve the mold's manufacturing accuracy and performance. Generally, the use of professionally produced standard parts will improve the matching accuracy and position accuracy by at least one order of magnitude compared with self-made standard parts, and ensure interchangeability, increase the service life of the mold, and then promote the internal economic system, operating mechanism, and industrial structure of the industry. The reform of production management has achieved specialization and large-scale production, and has driven the formation and development of the mold standard commodity market. It can be said that without the specialization and commercialization of mold standard parts, there will be no modernization of the mold industry.

The prospects for the development of China's mold standard parts industry are optimistic. With the rapid development of China's mold industry, the standardization, specialization, and commercialization of mold parts have reached a higher level and have made significant progress. China's mold standardization work began after the National Mold Standardization Technical Committee was established in 1983. At present, there are about 20,000 mold production units in China. Mold production has been greatly improved. Organization experts have formulated, revised, and reviewed mold standards, and have issued more than 90 standards, of which 22 are standard stamping standards and 20 are plastic mold standards. The rest. The issuance and implementation of these standards have promoted the technological progress and development of the mold industry, resulting in great social and economic benefits. The research, development and production of modular standard parts are in full swing, regardless of product types, varieties, specifications, or the technical performance and quality levels of the products. China's mold standardization system includes four major categories of standards, namely: mold base standards, mold process quality standards, mold parts standards, and mold production-related technical standards. Die standards can be divided according to the main classification of die stamping die standards, plastic injection die standards, die casting die standards, forging die standards, fasteners cold die standards, drawing die standards, cold extrusion die standards, rubber die standards, glass products Die and car die standards and other top ten categories. At present, China has more than 50 standard molds, more than 300 standard numbers, and 14 general-purpose devices and 244 varieties for automotive die parts, with a total of 363 standards. The formulation and promotion of these standards have improved the standardization and level of Chinese molds.

In recent years, with the rapid development of China's national economy, the general trend of the mold market is stable and upward. The automotive and motorcycle industry is the largest market for molds. Household appliances, electronic communications, construction equipment, instrumentation, plastics and rubber and other industries also have a considerable market for molds. Therefore, the application of mold standard parts will be increasingly widespread. In the future market economy, mold standard parts will become a very active and rapid development product. From the perspective of long-term development, China's mold industry will inevitably undergo profound changes along with the advent of the era of knowledge economy. Modeling of molds, standardization of parts and components, standardization of specialized production and supply of commercial products will also be future development. The inevitable trend. Therefore, it is convinced that the development prospect of the mold standard parts industry is very optimistic and beautiful.

However, we must clearly see that the current level of standardization and application of molds in our country is still relatively low, with an optimistic estimate of less than 30%, and there is still a large gap compared with foreign industrial developed countries (70-80%). Each year still needs to import a considerable amount of mold standard parts from abroad, the cost of which accounts for about 3-8% of the annual mold import amount. There are still many problems in terms of technical standards, scientific and technological development, and product quality for domestic standard mold parts. For example, product standards are confusing, with few functional components and low technical content, poor applicability; small technological changes, obsolete equipment, backward technology, low level of specialization, and unstable product quality; shortage of professionals, poor management, and low production efficiency , Long lead times; uneven distribution of production and sales outlets, operating specifications and less variety, lack of supply; some units in order to compete for market, do not talk about quality, shoddy, shoddy goods flood the market. There is also the need to seriously study and urgently resolve the phenomenon of cost-cutting, blind price cuts, and disruption of the market. It can be seen from the perspective of long-term development, the arduous tasks and bright prospects of mold standardization and mold standard parts. As the guiding ideology of mold standardization work proposed by the Standards Committee of the China Die and Mould Industry Association, standardization is the basis, specialization is the direction, and commercialization is the key.

Pipe fittings

Excavator pipe fittings and tube fittings are essential components in the hydraulic system of excavators. These fittings are used to connect hydraulic hoses and tubes to various components of the excavator, such as the hydraulic pump, cylinders, and valves.

There are various types of excavator pipe fittings and tube fittings, including:

1. Flanges: Flanges are used to connect two pipes or tubes together. They are usually bolted together and provide a leak-free seal.

2. Adapters: Adapters are used to connect two different types of fittings or components. They can be male or female, and can be used to connect hoses, tubes, or other components.

3. Elbows: Elbows are used to change the direction of a pipe or tube. They come in various angles, such as 45 degrees or 90 degrees.

4. Tees: Tees are used to connect three pipes or tubes together. They come in various configurations, such as equal tees or reducing tees.

5. Couplings: Couplings are used to connect two pipes or tubes together. They can be either rigid or flexible, and are often used in tight spaces where movement is limited.

Excavator pipe fittings and tube fittings are made from various materials, including steel, brass, and aluminum. The choice of material depends on the application and the environment in which the excavator is used. For example, steel fittings are often used in high-pressure applications, while brass fittings are used in low-pressure applications.

Overall, excavator pipe fittings and tube fittings are critical components in the hydraulic system of excavators. They ensure that hydraulic fluid flows smoothly and efficiently through the system, enabling the excavator to perform its tasks effectively.

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