Domestic blades used for hydraulic shears of excavators frequently encounter problems, with broken or chipped teeth being a common issue. This is a headache for the manufacturers of hydraulic shears. Why do domestic blades generally wear out so quickly?
Firstly, the hydraulic shears have been widely used in the scrap steel and demolition industries. When cutting and dismantling scrap steel and the frames of scrapped cars, the blades are subjected to great force. Especially when dealing with irregular scrap steel, it can lead to uneven force distribution on the blades. Under strong external pressure, if the material and heat treatment of the blades are not up to standard, they are prone to chipping and breaking.The materials used domestically are also manganese steel, but their composition is quite different from that of the foreign products. The risk of counterfeiting is low, which makes it difficult to find honest suppliers.
In addition, heat treatment technology in our country has only been developed for less than 20 years, and it cannot be compared with the heat treatment techniques of Germany and South Korea. Therefore, to achieve superior performance of our hydraulic shears, we can only rely on imported blades, which are very expensive.For example, when importing blades from South Korea: The cost of a set of 12 blades is 1500 US dollars. If the equipment is of high quality, a large investment is necessary. The acceleration and pressure boosting valves also use imported components. This not only improves the cutting efficiency but also enhances the cutting force. The rapid cutting action can also prevent the tooth breakage caused by the dull compression of the blades.
Post time: Jun-16-2025