Tightness of lifting chain should be suitable, tight increase in power consumption, bearing wear; too loose chain and easily beat off the chain. Tightness of the chain as follows: Lift or pressure from the middle of the chain, the two sprocket center distance of about 2% -3%. Sprockets on the shaft should not skew and swing. In the same in the end face of the two sprocket drive assembly should be in the same plane rigging lifting chain, sprocket center distance of 0.5 meters, tolerance 1 mm; sprocket center distance of 0.5 meters above the When, tolerance 2 mm. But it does not allow friction chain. When the sprocket wear serious after lifting chains, sprockets should also be replaced with new and new chain to ensure good engagement. Not just a single replacement or a new sprocket chain. Otherwise it will cause poor acceleration engaging new chain or a new sprocket wear. Sprocket tooth wear to a certain extent should be used upside down (ie adjustable sprocket surface use). To extend the use of time. The new lifting or by the use of long chain after elongation, it is difficult to adjust, remove the link to see the situation, but it must be even. Should the back through the chain link, locking plate inserted in the outside lock piece openings should move in the opposite direction of rotation. Lifting chain at work to remember to add oil. The lubricant must enter the roller and the inner sleeve with the gap in order to improve working conditions in order to reduce wear. It can not be used in combination with some of the new chain on an old lifting chain lifting chain maintenance, or prone to shocks in the drive, and pull off the chain. Chen of the company a brief introduction about the G80 lifting chain common method of heat treatment: annealing, normalizing, quenching, tempering, carburizing, nitriding, carbonitriding, boronizing. Aging treatment artificial aging, natural aging process. Annealing, the workpiece is heated to 30-50 degrees above Ac3, holding a certain time, with the furnace cooled to 500 degrees at cooling in space. Normalizing, the steel is heated to above Ac3 or Acm, an operation after removing heat from the furnace in air-cooled. Quenching 80 lifting chain, the steel is heated to above Ac3 or Ac1, after holding fast cooling in water or oil, coolant, it has been unstable organization. Tempering the hardened steel reheated to a temperature below Ac1, after cooling to room temperature incubation of the heat treatment process. 100 lifting chain, lifting chain chen (online consultation), lifting chain sling from Hebei chen Manufacturing Limited. Hebei chen sling Manufacturing Co., Ltd. (www.qzhon.com) Hebei Baoding, forestry machinery leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Chen led force in a sling with the staff warmly welcome all inquiries negotiations to create chen sling a better future.