The Era Of Wear-resistant Galvanized Steel Wire Rope Is Coming Soon
China's galvanized steel wire rope production in 2015 has reached 1.87 million tons, the scale of production ranks first in the world, the buyer's market has been fully formed, the user to buy galvanized steel wire rope with enough selection space. It is noteworthy that the concept of galvanized steel wire rope users to pick the rope in the quietly changed from the previous major focus on selling prices, and gradually to pay more attention to product quality, service life changes.
2015 Germany exported to China galvanized steel wire rope average price of 5565 US dollars / ton, even if its retail price has reached more than 3 times the domestic galvanized steel wire rope, there are still customers willing to buy a high price to use, we can see some of the domestic users of high quality steel The strong demand for the rope.
Galvanized steel wire rope is an indispensable part of lifting machinery, with various types of lifting machinery to high speed, high head, high load direction, the galvanized steel wire rope fatigue resistance requirements are getting higher and higher. In order to avoid the sudden loss of galvanized steel wire rope may cause damage to the property, with strong anti-fretting wear and fretting fatigue capacity of manganese-based galvanized steel wire rope because of its high quality, long life and by customers of all ages and welcome.
Fretting fatigue and wear are the main reasons for the failure of galvanized steel wire rope
Galvanized steel wire rope is the lifting machinery and other transmission parts often used to the important wire products. Galvanized steel wire rope in the course of the main reason for the failure is wear, fatigue and corrosion. The use of different environments, different types of galvanized steel wire rope, so the reasons for the failure of galvanized steel wire rope is also significantly different. The appearance of the failure galvanized steel wire rope includes the oxidation of the surface of the steel wire, the occurrence of brown red rust; due to external wear caused by reduced diameter; due to fretting wear and fretting fatigue lead to galvanized steel wire rope internal fracture. Therefore, in order to extend the service life of galvanized steel wire rope, it is necessary for the galvanized steel wire rope failure in the form of analysis of the reasons to find the appropriate inhibition of fretting wear and fretting fatigue effective method.
Most varieties of galvanized steel wire rope is made of high quality carbon steel wire, fiber core and grease made of some varieties of galvanized steel wire rope is made of stainless steel twist. The rope is made of high quality carbon structural steel hot-rolled wire rod as raw material, it is cold drawn to the specified diameter, and at the same time to achieve a certain physical performance requirements. According to the above process, the production of rope steel wire is the smooth steel wire, rope steel wire cold no longer do any surface treatment is directly used for twisting the rope or steel core is galvanized galvanized steel wire rope.
Galvanized steel wire wear includes wear on the outer surface and wear on the inner wire surface. The outer surface wear is caused by friction with the pulley groove and other objects; the wear of the inner wire surface is caused by the relative jaw between the adjacent wires in the course of use.
Galvanized steel wire rope in the process of failure, due to fretting wear in the wire and wire rope surface to form a serious wear and tear damage, and then the fatigue fracture of steel wire, which also proved galvanized steel wire surface of the internal wear caused by micro-wear and micro Relevance of Fatigue Crack initiation, Fracture and. The interaction between fretting and alternating stress will accelerate the initiation and expansion of fatigue crack, which will shorten the service life of galvanized steel wire rope. Therefore, fretting fatigue is the main reason for the failure of galvanized steel wire rope.
As the surface of the material has a certain degree of roughness and waviness, so when the contact surface is relatively sliding, the material deformation, adhesion and relative movement of the adhesive point when the tearing material generated by the transfer and loss is caused by wear and tear. It is because there is a sliding phenomenon between the steel wire inside the rope so that the rope has such a feature, so galvanized steel wire in the course of the use of wire between the micro-movement is inevitable.