Professional production of grinding steel bars

The basic situation: The company was founded in 1986 so far, agreed to engage in the ball mill, rod mill steel bars, processing and export business of all kinds of wear-resistant materials. It covers an area of ??180 acres, something the two plants, 230 employees, 2012 sales revenue of 238 million yuan and exports worth 35 million US dollars, tax 29,000,000 yuan. Rely on science and technology, adhere to innovation: the company is a provincial high-tech enterprises, the provincial enterprise technology centers, national scientific and technological progress advanced units. Adhere to the road of research and innovation of a combination of research, with Shandong University of Technology, North China Electric Power University, the Australian Institute of Mining balls expand school-enterprise cooperation, work together to upgrade ball industry. R & D investment in the past five years, technological innovation reached 30 million yuan, is eligible for patent achievements 14, including independent research and development "peeling roll forged steel ball automatic production line", "steel rod mill automated production line" technology, to fill the gaps, to reach the world advanced level . Has built nine automation equipment production lines, to reach an annual output of 100,000 tons of various steel balls, steel rod mill scale capacity of 20,000 tons, is located in China forefront of the industry specialization, innovation, foreign trade, export processing scale enterprises. Establish a global brand, to seize the international market: the current "China and China" brand products have been identified as provincial brand, Chinese machinery supply famous brand, "China and China trademark" is a provincial famous trademarks, well-known trademark is being processed, registered in Madrid and other 30 trademark protection in many countries, 80 percent of exports abroad, being stronger internal and external sound is a two-way market development model. Adhere to energy-saving, low-carbon businesses striving green: in recent years on the production of natural gas and heating stoves later changed into new energy-frequency induction furnace, to create environmental protection, clean, energy-efficient green plant, become Zhangqiu, Jinan Municipal Energy environmentally advanced units. Huamin built a century enterprises, a world famous Ball: This is China and China set the goal of industrial development has been planned out in 2016 (the 30th anniversary of the construction companies), the annual production reached 200,000 tons, sales revenue reached 1.5 billion yuan, profits and taxes amounting to billions; lay the foundation for the enterprise market. When the seventh five-year plan to achieve an annual output of 500,000 tons, and striving for international trade before the top ten. For the early formation of industrial clusters ball, forging steel balls become China export processing base and work hard. Rod mill quality standards:?? (1) grinding rods Rockwell hardness HRC45-55 (2) impact toughness values ??greater than 12 joules (3) are based on a large round steel procurement, wear steel bars following advantages?? :? (1) good wear resistance, abrasion resistance effect is made of steel bar rolling 1.5-2 times, significant cost savings to customers. ? (2) using the latest methods of production, sizes can be adjusted according to customer demand, greatly improving flexibility, in addition to unnecessary waste. ? (3) extend the service life, cost savings, reduce workers' labor, not to stop the mill every day, plus steel bar and troubles, but also greatly increase the yield. ? (4) reduce the magnetic difficulty, improve product quality. Silica sand industry attaches particular importance to this article. ? Shandong Huamin Steel Ball Co., Ltd., formerly established in 1986, the first steel factory in Zhangqiu County, in May 1996, changed its name to Jinan Huamin Casting Co., Ltd., in August 2003, changed its name to Shandong Zhuduan, in April 2008 changed its name to Shandong Huamin Steel Ball Co., Ltd. ? At present, Shandong China and China's Industrial Park covers an area of ??320 acres, building area of ??50,000 square meters, employees 236 people, with modern office environment, advanced production equipment and a number of high-quality scientific and technical personnel, vice president of China and China Zhang Xun please call One Triple Triple Wu long according to the Temple of the Stanford Yi Wu, management personnel. The company is mainly based on the various types of grinding media - wearable forged steel ball, wear steel bars of the development, production and sales, after years of unremitting efforts of all staff, has established a company in China, Zhang Xun, vice president of China and China forged please Dial One Triple Triple Wu long according to the Temple of the Stanford Yi Wu, the leading position of the ball. Our existing two production areas, with independent research and development of forged steel ball production line 11; steel rod mill automated production line 3, the annual design production capacity of 150,000 tons. The major products exported to Chile, South Africa, Ghana, more than thirty countries and regions. And with China National Gold Group, China Aluminum Group, the South African gold companies, Rio Tinto Group, 500 domestic and foreign enterprises to establish a strategic partnership. ? Huamin company has won the Shandong Province famous brand enterprises, high-tech enterprises in Shandong Province, Shandong Province with the contract and trustworthy enterprises, Jinan City, Zhangqiu exports advanced enterprises and other awards. ? AHK production technologies absolute advantage:? 1: the production process using our self-developed fully automatic quenching of the rod mill production line, advanced heat treatment temperature control devices and supporting equipment, the choice of independent research and development of special wear-resistant materials production. ? 2: The production line is currently the most advanced heat treatment quenching steel bar production line, fully automated, fully realized Bars transfer of heat treatment integrated microcomputer control, production of different materials to simply start when the corresponding button to automated production, production line temperature between each point can be displayed and controlled every aspect, Bars hardenability layer thicker, after the heat-treated steel bar production line is more uniform than ordinary wear heat-treated steel bars in the display of the microcomputer, steel bars each Part uniform hardness, heat-treated steel bars have been completely eliminated all parts of varying hardness and scale of the problem, a progressive lowering of the rate of wear and broken rods. ? 3: the hardness of steel bars to break through the traditional, conventional heat-treated steel bars is about hardness HRC10-15 ordinary round for heating or heat treatment hardness directly enhance stepped up to HRC45-55, but Huamin Steel Bars cards The difference is the use of advanced production line, hardness directly to a high-hardness heat treatment after the round, then Huamin Zhang Xun, vice president of long call One Triple Triple according to Wu Yi Wu Temple of wantonly again treated with heat treatment technology to HRC45-55 of hardness range, which is Huamin brand of high hardness steel bars, uniform hardness, and constantly stick the key. ? China and China brand products parameters advantages:? 1: China and China licensing Bars 45-55 hardness, wear effect than ordinary round 2-2.5 times, China and China licensing Bars straightness ≤3 / 1000, broken rods rate ≤ 3% (customer actual breaking bar rate ≤1%) impact toughness ≥12J. Actual wear heat-treated steel bar is much better than traditional production lines. ? 2: eligible ISO9001-2000 international quality system certification, ISO14001-2004 international environment system certification and other honors, AHK licensing round steel bars for the production of high quality, reliable steel quality raw materials, not by small mills, to ensure the quality of stability, to ensure the quality of the premise of minimum prices, used for customers who are satisfied, we can say the lowest quality. ? Rod mill product quality inspection requirements:? Under 1 bar cutting a saw mill material, dimensional tolerances in order to Huamin company vice president Zhang Xun, please call One Triple Triple Wu long according to the Temple of the Stanford Yi Wu, seeking prevail. After cutting ends with a grinder throw into R arc. ? 2. Surface grinding rod mill may not have visible cracks, burnt, crack phenomenon. ? 3. The grinding rod straightness is not less than 0.2%. Diameter tolerance + 0m; -1.5mm; length tolerance + 0m; -25mm, less than 3% broken rod mill product testing methods: 1. grinding rod surface quality inspection with the naked eye.??. ? 2. The rod mill size and defects with a vernier caliper, defective parts should be measured to avoid the ball. Length measuring meter stick. ? 3. The rod mill surface hardness was measured in accordance with a point per meter, the date arithmetic average. ? The grinding rod straightness test: class sampling 5, placed on the metal framework after straightening, the one end flush against the measuring head and the other straightening iron frame distance. Each product is to be rotated at least 3 times. ? Rod mill product acceptance:? 1 ball of each shift production quality and size, according to the above criteria strict inspection, qualified storage. ? 2. Each rod mill hardness test five times, if a steel bar standard, should either take double the number of re-inspection, if the result is still a failure, and all meet the requirements of the average hardness value hardness Huamin Deputy Zhang Xun please call One Triple Triple Wu long according to the Temple of the Stanford Yi Wu, provisions should be judged as qualified, or unqualified; 3. Factory sales rod mill test:? grinding rods for each batch sold by the QC for steel ball size, appearance and hardness testing, visual inspection of the number of dimensions, each size is 5, hardness test, each size 3-5, determination above. ? Wear ordinary round steel bars and steel rods and normalizing comparison? Description: First, the quality, performance comparison:? 1, wear-resistant steel bar products are self-developed special wear-resistant steel. Purchase of raw materials required by the user is also state-owned special steel production. Steel material than other conventional round of density, compression ratio, tensile strength, yield strength have been improved. Ensure the performance and qualification rate of steel. Ordinary rod mill is not rigorous procurement process. ? 2, normal wear-resistant steel bar products for the hardness HRC45-58, ordinary rod mill hardness HRC15-22, contrast index from the situation and after use, wear-resistant steel rod of the same material cycle (life) than Ordinary stick 120% -140% increase. ? 3, wear-resistant steel rod straightness of products by processing machinery straightening machine, to ensure the straightness of less than one thousandth of proportion. Common ground rod straightness usually per thousand to thirty thousandths. ? 4, wear-resistant steel bar products off the stick rate is typically less than one percent. Normal wear rate is high stick broken rods (not sure). ? 5, high temperature quenching and tempering production process of wear steel bar products that change the structure of the medium, so that the grinding rod microstructure become more dense and more resistant. Impact toughness is also improved. Common quality rod mill without any change. ? Second, the use of effects, cost comparison:? 1, high wear-resistant steel bars Products abrasion than ordinary rod decreased by 20 per cent plus stick down time, increased by 20% of the production. While reducing the labor intensity. ? 2, wear-resistant steel rod straightness good product to ensure the accuracy and fineness of the grinding material. Zhang Xun, vice president of China and China call One Triple Triple Wu long according to the Temple of the Stanford Yi Wu,? 3, wear-resistant steel bar products to ensure the good toughness not easily broken rods, reducing accidents and downtime. ? 4, wear-resistant steel bar products at both ends is specially treated to ensure that the ends are not easily sharpened ground, ground ends is easy to bend and break. So ordinary rod mill can not overcome this deficiency. 5, through a comprehensive comparison of the use of the user wear steel bar products can save 35% -40% of the cost than conventional rod mill three, wear steel bar production process: custom manufacturing --- machinery cutting raw materials - mechanical straightening Straightening machine - furnace heated to high temperatures --- --- full-transparent quenching and tempering furnace thermostat comprehensive quality inspection --- --- --- secondary heating tempering performance testing - packed into Library?