Overview of the Development of Foreign Wire Rope Industry in the Second Half of the 20th Century

Overview of the Development of Foreign Wire Rope Industry in the Second Half of the 20th Century

1. Overview of the development of foreign wire rope industry

       In the second half of the 20th century, the rapid economic development of western countries and the rapid advancement of science and technology. The development of metallurgy and electromechanical industries provided favorable conditions for the development of steel wire ropes: the smelting of high-quality steel grades, and the continuous improvement of the technology level of high-speed non-torsion controlled cold and hot rolling , The performance of wire-drawing rope-making equipment has been continuously improved. High-speed wire-drawing machines, large-bearing high-speed intelligent tube twisting machines and large-scale rope twisting machines have come out successively, greatly improving the production conditions of steel wire ropes.

       At present, most steel wire rope manufacturing companies generally adopt large-scale turnover, realize continuous, high-speed, and automated operations, and improve production efficiency and the quality of manufacturing steel wire ropes: twisting machines are gradually developing in the direction of high-speed, automation, and intelligence, and basket twisting The manufacturing equipment is developing to large-scale, and the large tandem machine and the large spool rope forming machine have been put into use successively. In addition, the automatic control of wire rope production process and the participation of robots in production activities are more advanced.

       The structural design of the steel wire rope is scientific and reasonable, the different design of the twisting process parameters of the steel wire rope of the same structure for different purposes, the high level of physical quality of the steel wire rope, the actual long and stable service life of the steel wire rope, which is conducive to the safe use of users and regular planned replacement. Briton, Diepa, Carsa, Verope,Kiswire etc.  A group of world-renowned steel wire rope manufacturers have a long-lasting brand effect of product quality in one or even several application fields and recognition and recognition in the domestic and foreign markets, and they have a market monopoly position that domestic products cannot replace.

The actual output of foreign steel wire ropes has been decreasing year by year, but the number of high-quality steel wire ropes has stabilized and increased slightly. This is the concrete realization of the macro concept of advancement and retreat by foreign companies in the wire rope industry.

2. Overview of the development of steel wire rope production in my country
       The development of my country's wire rope industry started in 1939, but the real start was in the 1950s after the founding of New China. In the 1950s and 1970s, in addition to the expansion and reconstruction of the steel wire rope factories in Anshan and Tianjin, a number of steel wire rope enterprises were built in Jiangsu, Hunan, Shandong, Hubei and other places, and the strategically deployed Shizuishan Iron and Steel Factory and Zunyi Metal Products Factory were newly built. . Tianjin once became a domestic production, research and development base for steel wire ropes and even wire products. After the 1970s, my country’s wire rope industry has strengthened the variety, structure and performance of special wire ropes such as line contact wire ropes, non-loose wire ropes, non-rotating wire ropes, special-shaped stranded wire ropes, full locked cables, flat wire ropes, compacted wire ropes, and oil drilling and mining. Research and development have made the development of my country's steel wire rope industry begin to take shape.

3. The characteristics of my country's wire rope manufacturing industry

       After the 1990s, my country's steel wire rope manufacturing industry has gradually formed several typical characteristics: the physical quality of steel wire rope products is basically stable. This is mainly due to the improvement of the quality of high-speed non-twist controlled cold and hot-rolled wire rod, the improvement of heat treatment, wire drawing, and the improvement of the production process equipment of the yarn, the improvement of the quality of auxiliary equipment and auxiliary materials, and the overcoming of technical difficulties. The number of private enterprises has increased substantially, but most of them mainly produce low- and medium-grade varieties. The rapid growth of the number and scale of private steel wire rope enterprises has made Nantong another steel wire rope production base after Tianjin.

       As of the end of 2011, there are 140 steel wire rope companies in Nantong that have obtained production licenses, accounting for 65% of the total number of steel wire rope companies in the country. The city's steel wire rope has an annual output of 1.4 million tons, accounting for 46% of the national output. In 2011, the Nantong Quality Supervision Bureau announced the results of the provincial special supervision and spot check. The qualified rate of wire rope products was 93.6%, which was significantly higher than that of the national supervision and spot check of the previous year. The structure of most varieties can basically meet the needs of domestic users, and the varieties and quantities that need to be imported are decreasing year by year. Triangular strand wire ropes, thick diameter wire ropes, plastic coated wire rope, elevator wire ropes, and compacted wire ropes have become products that domestic wire rope companies are competing to develop.

       The four cities of Suzhou, Wuxi, Chang and Cheng are one of the developed regions of my country's wire products industry, especially the steel wire rope industry. Tape wire rope, fine wire rope, hanging basket wire rope, crane wire rope, aviation wire rope, electrified railway contact net compensation wire rope, wire rope for truck crane, double compacted wire rope for piling rig, stainless steel compacted wire rope, plastic-filled wire rope, etc. The output and quality of these products are all superior products, and they have great ability to win market competition in domestic and foreign markets. The four cities of Suzhou, Tin, Chang, and Cheng are also important export bases of China's famous, refined, high-quality, and thin steel wire ropes. The foreign exchange earning capacity of exports accounts for the whole country. More than 80% of the export share of steel wire rope.

       my country's steel wire rope output has leapt to the forefront of the world. About 1 million tons in 2004, it has become a major producer of steel wire ropes, with nearly 500 large and small manufacturers; some of the low- and medium-grade point contact steel wire ropes are exported to the international market. In recent years, new varieties and new structures of steel wire ropes have continuously emerged, and product quality and performance have also been continuously improved. Product performance improvement followed the pace of developed countries and began to transform from a large wire rope production country to a strong wire rope production country.

4 Problems that need to be solved in the transformation of steel wire rope production from large to strong

       1) There are too many steel rope manufacturers, low industrial concentration, and unreasonable distribution of enterprises.

       2) The structure of steel wire rope still does not meet the demand, the technological content is low, and the economic benefits are not satisfactory; the development ability of new products and new technologies of the enterprise is weak, the repeated construction of chasing wind is still there, the market is disorderly competition is fierce, and the industry regulation is weak.

       3) The import and export price ratio of steel wire rope products has increased, and the anti-dumping of the United States and the European Union has been harassed from time to time, and the overall level of foreign exchange earnings is not high: the export of wire products lacks common and cooperation, and the anti-dumping response and response capabilities are poor.

       4) There is a lack of brands recognized in the international market, and the competitiveness of the international market needs to be further strengthened.

       5) Some important wire ropes still need to be imported.

       6) The special wires for medium and high-end products are not yet very stable, which affects the continuous improvement of the overall physical quality of steel wire rope products.

       7) The "three wastes" emissions from steel wire rope production have not yet reached the target control range requirements, and the number of "three wastes" emissions from steel wire rope enterprises is increasing.