The hottest internal combustion engine industry re

2022-08-10
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Revitalization of internal combustion engine industry the special steel market for gas valves is optimistic

in recent years, China's internal combustion engine manufacturing industry has developed rapidly, stimulating the demand for special steel for internal combustion engines, becoming a bright spot in the special steel market and attracting the attention of traders and market participants. In recent years, China's internal combustion engine manufacturing industry has developed rapidly, driving the demand for special steel for internal combustion engines, which has become a bright spot in the special steel market and has attracted the attention of traders and market participants

internal combustion engine is the leading power equipment of transportation, engineering machinery, agricultural machinery, fishing ships, national defense equipment, geological and oil drilling rigs, tourism and sports equipment, garden machinery and various general machinery. Internal combustion engine industry is an important basic industry. After years of development, China's internal combustion engine industry has made great progress, and the technical level of internal combustion engine products such as energy conservation and emission reduction has been greatly improved. China has become a major country in the production and use of internal combustion engines in the world. At present, there are about 3000 manufacturing enterprises. In 2010, there were nearly 400000 employees in the industry, with a total industrial output value of more than 300billion yuan, an internal combustion engine output of more than 70million units, and a total power of more than 1.2 billion kw. All kinds of internal combustion engine products basically meet the needs of national economic development, and a considerable number of products are exported to the international market as single machines or with supporting main machines

this year, the production and sales of internal combustion engines in China are still strong, rising steadily. According to the data of China internal combustion engine industry association, in the first half of 2013, the sales of internal combustion engines nationwide totaled 30.7389 million units, an increase of 3.73% over the same period last year; The completed power was 950.2504 million KW, with a year-on-year increase of 3.06%. Several key listed companies showed signs of growth. For example, Weichai Power Company, which is the main product of heavy-duty engines, released its 2013 interim report, which showed that the company achieved an operating revenue of about 30.92 billion yuan, an increase of 14.27% over the same period in 2012. In the first half of this year, 155100 heavy truck engines were sold, up 22.7% year on year. Guangxi Yuchai Machinery Co., Ltd. sold more than 310000 engines this month, with a year-on-year increase of 15%. The engine market share increased by 1 percentage point over the same period last year, ranking first in the industry. The industry generally believes that the prosperity of the internal combustion engine industry has rebounded

according to the analysis and research of market participants, the automotive market has warmed up, boosting the internal combustion engine industry. This year, the automotive industry continues to develop rapidly, the production and sales volume continue to grow, and the demand for automotive engines has increased. Now in August, the sales volume of vehicle engines was 1.5449 million, an increase of 8.6% month on month. The sales volume of gasoline engines for vehicles in August was 1315000 units, with a month on month increase of 11.48%; Gasoline engines for commercial vehicles sold 80700 units in August, up 10.05% month on month

in August this year, the national sales volume of internal combustion engines was 4.854 million units (including the data of 106 enterprises and national motorcycle engines), with a total of 40.9779 million units, a year-on-year increase of 5.1% and a cumulative year-on-year increase of 6.32%. The completed power is 149.9801 million KW, with a total of 122.59819 million KW. Compared with last year, the industry market has increased steadily, and the sharp recovery of the automotive market has greatly improved the overall market of the industry

the revitalization of China's internal combustion engine industry has stimulated the demand for special steel such as valve steel for internal combustion engines. According to insiders, valve steel is a necessary material for manufacturing inlet and exhaust valves of gasoline engines and diesel engines, and it is also a key material in the whole engine. It is of great importance in the field of transportation power machinery. The production of gas valve steel is a highly professional field in the production of special steel. Although the quantity is not large, the working conditions are poor, and it is usually required to work under the conditions of high temperature, high pressure, high scouring and high abrasion. Therefore, the performance requirements of gas valve steel are higher, basically to achieve high thermal strength, good thermal hardness, high fatigue strength, good wear resistance and corrosion resistance

according to the structural characteristics of gas valve steel, gas valve steel mainly includes martensitic gas valve steel, austenitic gas valve steel and high-temperature alloy. At present, austenitic heat-resistant steel is the most used at home and abroad. Its demand continues to grow with the continuous development of the internal combustion engine industry, and the market prospect is very broad

during the Eleventh Five Year Plan period, the average annual growth rate of the total output and output value of internal combustion engines was about 10%. By the end of 2009, the actual total output of internal combustion engines in China was 67 million units, one year ahead of schedule and 30% more than the expected goal of the eleventh five year plan. The total power is 1.13 billion kw. Compared with the total power of 665 million KW completed in 2004, the total industrial output value is 273.9 billion yuan, and compared with the expected target of 135billion yuan in the eleventh five year plan, the total industrial power and total output value have doubled

during the 12th Five Year Plan period, China's internal combustion engine industry will continue to develop, which will not only increase the demand for valve steel for internal combustion engines, but also put forward higher requirements for quality. According to the 12th Five Year Plan for the development of China's internal combustion engine industry, during the 12th Five Year Plan period, the development speed of the internal combustion engine industry will operate with the characteristics of continuous stability and orderly improvement. The average annual growth of product output is expected to be%, the average annual growth of the total industrial output value of the whole industry is expected to be%, and the average annual growth of economic benefits is expected to be%. The output of the product is estimated according to the supporting use: 30million sets of internal combustion engines for vehicles; 1million internal combustion engines for construction machinery; 500000 multi cylinder internal combustion engines for agricultural machinery; 7million single cylinder internal combustion engines for agricultural machinery and other purposes; 26million gasoline engines for motorcycles; 28million general purpose small gasoline engines; 800000 internal combustion engines for fixed machinery; 800000 high-speed internal combustion engines for small and medium-sized ships; 50000 internal combustion engines for ships (medium and low speed), railways and oil drilling; 50000 internal combustion engines for national defense industry, special equipment and other purposes

it can be seen that the gas valve steel market for internal combustion engines has injected strong power and vitality with the sustainable development of China's internal combustion engine industry, and the market prospect is promising. At the same time, the quality of gas valve steel has also increased new and higher requirements, which brings new challenges and opportunities to domestic special steel production enterprises

insiders pointed out that the overall scale advantage of China's internal combustion engine industry is not prominent, the output is large, but the efficiency is not high, the level of the manufacturing system is uneven, and the overall level is not high. The product brand awareness is not high, and the international market competitiveness is weak. Core technology is controlled by others. The development ability of advanced technology software of internal combustion engine is backward, and the R & D of complete machine and parts with high-tech content depends too much on foreign countries

in order to continue the deformation

therefore, during the 12th Five Year Plan period, China's internal combustion engine industry has revealed that the company will strengthen the research and development of new material products, high efficiency, emission control and efficient and clean use of alternative fuels as one of the development priorities. Develop large and medium-sized diesel engines for construction machinery with high power, high torque, high reliability and emissions meeting the requirements of national standards. Vigorously carry out the research and development of new technologies, new processes and new materials, and promote their application in internal combustion engine products. Strengthen technological transformation and improve the process technology and equipment level of processing, manufacturing, testing and testing in the whole industry

the opinions of the general office of the State Council on strengthening energy conservation and emission reduction in the internal combustion engine industry put forward that by 2015, energy-saving internal combustion engine products will account for 60% of the total number of internal combustion engine products in the whole society. Compared with 2010, the fuel consumption rate of internal combustion engines will be reduced by 6%-10%, and 20million tons of commercial fuel will be saved, 62million tons of carbon dioxide emissions will be reduced, 10% of nitrogen oxide emissions will be reduced, and 15million tons of commercial fuel will be saved by using alternative fuels; Cultivate a number of key remanufacturing enterprises such as engines for automobiles and construction machinery; Realize the localization and large-scale production and manufacturing equipment of efficient, energy-saving and environment-friendly internal combustion engine host and its parts; Establish policies, regulations and standard system for energy conservation and emission reduction of internal combustion engine products

this puts forward higher requirements for the quality and performance of the steel used in the manufacture of internal combustion engines. The steel is required to achieve high thermal strength, good thermal hardness, high fatigue strength, good wear resistance and corrosion resistance, so that domestic internal combustion engines can achieve energy conservation and environmental protection. At present, compared with the international developed countries and the requirements of the internal combustion engine industry, there is still a certain gap in the variety and performance of special steel for gas valves in China. According to the induction and comparison between the latest gas valve steel standards in China and the commonly used gas valve steel grades at home and abroad, the development of gas valve steel in China is at a medium level in the world

according to the analysis of insiders, due to the low precision of hot rolling mill and large deviation of rolled products in China's special steel plants, the advanced production process of finish rolling, straightening and polishing cannot be adopted like that in foreign countries, but the production process of hot rolling, cold drawing, sizing, straightening and polishing can only be adopted, and the cost of producing 45cr9si3 by this process is relatively high. Therefore, at present, 42cr9si2 and 40crl0si2mo steel grades are widely used in exhaust valves of internal combustion engines with low load, such as agricultural vehicles, and intake valves of internal combustion engines with medium and high load

special steel for engine valves has high high temperature hardness, high fatigue strength, good oxidation resistance and high temperature corrosion resistance. This is because the engine valve is in contact with high-temperature combustion gas. The temperature of the suction valve is about 500 ℃, and the temperature of the exhaust valve is about 800 ℃. Therefore, the engine valve works under very harsh conditions. Therefore, the material used is fr ⑴ 03C computer servo universal tensile testing machine at high temperature. It is a new material testing machine combining electronic technology and mechanical transmission. It is heat-resistant steel or heat-resistant alloy with long-term heat resistance

in recent years, due to the increase of engine exhaust temperature and the progress of high functionality of the engine, engine valves are required to further improve the heat resistance and lightweight. In order to meet these requirements, Japanese steel mills have developed a variety of materials other than JIS standards, and reached a practical level. For the purpose of lightweight, some engine valves are made of titanium alloy instead of heat-resistant steel or heat-resistant alloy. In the manufacturing process, in order to achieve lightweight, the center of the valve is made hollow by drilling; New technologies such as cold forged valves to reduce costs are being studied and promoted in the direction of practicality

at present, the requirements of further improving work efficiency and further reducing exhaust emissions are put forward for automotive engines. In order to reduce exhaust emissions, diesel engines need to further pressurize the fuel injection pressure. Therefore, high-strength materials with high pressure resistance are needed, some of which are high fatigue strength materials

these are new research and development topics faced by China's special steel production enterprises. The internal combustion engine industry has proposed to combine the medium and long-term development strategy of national energy with the development planning of electronic industry, equipment manufacturing industry, metallurgical industry, petrochemical industry and other related industries

the internal combustion engine industry has established a research topic on the ways and effects of the application of new materials in internal combustion engines. In view of the rising demand for the application of new alloy cast iron, substituting tin for molybdenum ductile iron, new aluminum silicon alloy, aluminum magnesium alloy materials, powder metallurgy and other new materials in internal combustion engine products, the research on the application of new materials in internal combustion engines is carried out to ensure the power, economy On the premise that the indicators of environmental protection and reliability are stable and improved, reduce the consumption of rare precious heavy metals in China, reduce manufacturing costs, and meet and adapt to the development needs of a new generation of internal combustion engine products in the future

in addition, the engine industry support policy and industrial upgrading bring challenges and opportunities to special steel enterprises. In the 12th Five Year Plan, the high-end equipment manufacturing industry represented by aviation manufacturing (including engine industry) has been listed as a strategic emerging industry. The country's emphasis on aviation manufacturing (including engine) has been gradually increased compared with the previous two months. It is expected that the country will pay more attention to aviation

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