Wind power equipment parts slewing thermal processing

With the development of a large number of wind power projects, China's wind power equipment parts supply structure is gradually changing. Key parts imported from a purely gradually turn to self-production of high-end production of key parts, slewing bearing is a typical high-priority parts.
As a professional and highly technical processing technology, induction hardening equipment is widely used in slewing gear parts and components production. In recent years, national policy guidance, as well as fiscal policy support, China's wind power equipment manufacturing industry rapid expansion of the scale, and gradually catch up with Western countries in terms of size. But the current bottleneck problem is how to solve the problem of high-end production and supply of key components. Previous major foreign equipment manufacturers due to product demand, unwilling to be the most advanced technology models sold to China. Therefore, some domestic manufacturers only two types of models to introduce some foreign products to meet market demand. At the same time, the domestic equipment bearing manufacturer enterprises induction of rapid development, but also added some gaps in market demand.
Wind power equipment has its own unique characteristics: the long-term field work, poor environment, poor maintenance, all the requirements of fan operation stability. In the normal case of continuous operation, the wind power equipment parts requirements are necessary to ensure that there are more than 20 years of trouble-free operating life, if a parts failure in the short term, each replacement maintenance costs will be ten million yuan or more.

Slalom unqualified "Twin Peaks" Wheel serious quality problems

Recently, AQSIQ informed Wheel of product quality supervision and inspectioresults, Li Jizhou City Star Shalun produce fiber-reinforced resin bonded abrasive cutting wheel, turning the Precision bearing failed. The main reason is the failure of 10 test fiber-reinforced resin cutting discs grinding wheel speed requirements before such tests appear in full swing broken, is a serious quality problems.
The Hebei, Liaoning, Jiangsu, Zhejiang, Anhui, Fujian, Jiangxi, Shandong, Henan, Hubei, Guangdong and other 11 provinces 197 production of 200 kinds of products for the supervision wheel. According to mandatory national standard GB2494-2003 "Standard Abrasives safety rules," recommended national standard GB/T2485-2008 "abrasive technology" as well as the industry standard JB/T6353-2006 "abrasive resins and rubber sheets wheel ", JB/T3715-2006" abrasive grinding wheels with cymbals ", JB4175-2006" fiber-reinforced resin bearing manufacturer abrasive cutting wheel "and other provisions of the standard, the appearance of the grinding wheel product defects, dimensions, geometric tolerance, hardness, static unbalance, rotation test, signs and other seven projects have been tested and found 30 kinds of product failure.
It is understood that substandard products, there are 17 kinds of grinding wheels with cymbals, fiber-reinforced resin cutting wheel, grinding wheel and resin ceramic flat flat grinding wheel diameter substandard products, wheel diameter is too large or too small will result in the course of grinding wheel rupture. 4 kinds of ceramic flat-shaped grinding wheel hardness failed. The hardness of the cutting wheel, grinding plays a key role in the efficiency of the grinding wheel hardness soft and hard grade, to the material of the workpiece and being adapted to the hardness of soft efficiency is not high; hardness of the workpiece may cause burns hard

Kennametal held slewing gear and processing technology exchanges demonstration

 December 2 to 3, Kennametal Machine Manufacturing Co., Ltd. and Tianjin sincere work successfully held in Kenner Tianjin factory technical exchanges presentations, a comprehensive display of Kenner gearboxes for large slewing major components and processing tool overall solution.
At the meeting, for large slewing gear boxes and machining, the tool from Kenner German experts with senior technical parameters and processing application examples, etc., in-depth and detailed discussion. Meanwhile, the show was also promote a modulus between the M3.5-M40, as well as larger modulus latest product indexable carbide inserts gear cutter, hob and overall hard for machining centers carbide cutters and welding gear.At present the domestic OEMs are committed to the development can be processed nuclear power, wind power, large ships, high-speed rail and other industries in large and giant piece of heavy-duty CNC milling and boring machine large, one of the key features of CNC coordinate rotary table, there is a large market development. Yantai Universal Machine Tool Accessory Group is to seize the initiative in this area, bearing manufacturer and stronger, to revitalize the equipment manufacturing industry to make contributions.
   In April Nanjing CNC Machine Tool Show, Yantai Global Group will showcase more than 50 kinds of products, including for domestic high-end CNC lathes and milling machining centers supporting the power turret and servo turret, and great market potential high value-added products TK62500 direct-drive turntable

Adjustable Mind

Diameter cylindrical roller bearing manufacturer with adjustable concentric small. At low load, it is about 3-4 ', in the medium to high load of 5-7'. With arc-shaped outer concentric bearing wheel adjustable 15-20 '. When a larger angle error, according to the size of the load there is significant edge stresses, it will reduce bearing life.