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Jiangsu qianfeng Fasteners CO.,LTD ADD:66,xinning road,jiang an economic developmentarea,rugao nantong,jiangsu,china Tel :0513-87956999 8795768 Fax:0513- 87957089 Mobile:13901429661（qiangkun,he） E-mail：postmaster@jsqianfeng.com maomao@jsqianfeng.com Http://www.jsqianfeng.com
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Development trend of high strength fasteners in 2011 |
| Update:
2011-3-8 |
| Under the current situation of the growth of the market demand for fasteners, the momentum of the expansion of production capacity has not been well controlled. At present, Chinas fastener industry has a number of enterprises have made outstanding achievements by innovation. On the whole industry, the majority of enterprises innovation consciousness is not strong, conservative, mediocre. Todays domestic and foreign markets need to increase, the specific needs of the ever-changing, foreign customers to provide us with the fastener products, the "cheap" demanding. High strength fastening pieces of our low-end products of excess production capacity, frequent price competition in the high-end products, to sell a good price, but because of limited capacity, slow rise, these phenomena only enhance independent innovation in order to completely change. Excess capacity and redundant construction not only lead to the imbalance between production and consumption, but also lead to a series of vicious price competition, affecting the profitability of the fastener industry. Before use check whether thread rough? Whether there is iron or dirt thread? These things often can cause the lock. To recommend the use of fasteners do grease butter before use? MoS2? Mica? Graphite or talcum powder for lubrication? Is now generally use the waxdip treatment for lubrication anti lock. Note the use of the method of a, the speed of the power to spin into the appropriate? Not too fast too large, as far as possible the use of torque wrench or socket wrench to avoid the use of adjustable wrench or electric wrench. Speed too fast can cause the temperature to rise sharply and cause the lock to die. High strength fasteners in heat treatment production, many high strength fastener material problems as long as it can be found in a timely manner through the appropriate process to repair the solution. For example, bolt has hardened 35# steel grade was later found to misuse of ML35 steel, reduce the tempering temperature after testing the tensile strength of qualified "release"; the longer bolt deformation amount exceed the standard, you can through the corresponding straightening technology; fastener surface rust can again after pickling black oxide can solve more sandblasting. Of course, "after" to solve the problem is the last ditch, to act cautiously. |
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