Domestic Crankshaft Why Were Praised In The Country
Qingdao Zibo Bo Yang Chai Diesel engine Limited production 8N330 marine diesel engine crankshaft has adopted the "Quality of the College Entrance Examination": equipped with the crankshaft of the 8N330 ship machine by Yanmar Co., Ltd. of Japan organized the durability test.
Domestic crank why were praised in China
According to reports, the trial 8N330 ship machine parts are imported except injector, the rest are domestic. Zi Cai Bo Yang through improved technology, with production of a variety of special tools and other methods to prevent the crankshaft machining distortion, improve the quality of journal polishing to achieve the national production of machine processing of the crankshaft. In the adjustment process, the process ends the company's original Chuck Positioning to the center hole location, the first connecting rod mill grinding spindle neck and then the neck, grinding parts of the process will open attachments in the top wire, changing the way of quenching fixture, from rigid to flexible clamping fixture, refinement hardening parameters, making plywood a dedicated polishing tools to ensure the crankshaft machining efficiency and quality.
Crankshaft assembly in the machine before shipping, Zi Cai Yang Bo of its 139 components were tested, and passed Yanmar Co., Ltd. of Japan experts on-site testing, durability testing for the shipping machine stood a good foundation.
8N330 ship machines successfully tested once again proved the quality of domestic crankshaft, gratifying. As more and more enterprises to produce crankshaft, machine-made ship loaded "Chinese heart" of the dream is a reality. However, the overall market conditions, the current domestic crank still praised in the domestic situation: crankshaft manufacturing domestic shipbuilding industry over the years is the common aspiration, whenever the crankshaft manufacturing enterprises in progress, the industry's no lack of applause Voice, however, made a lot of crank assembly is not currently being machine-made boat, but more to export to a foreign country.
It is said that the crankshaft can not be assembled domestically-made ship machine because of its quality is not good enough, or because the owner does not trust, but they crank exported to Japan, Korea and other countries, the same is equipped with a diesel engine in the ocean, This proves that the crankshaft of the quality of domestic ship machines to meet requirements. The owner of no confidence, in addition to the concept under its inherent effects, ship machine companies have a responsibility. According to sources from the industry, although the use by the owner who ultimately decide the crankshaft, but the ship machine companies, shipping enterprises before the list of recommendations will be provided to the owner, even if the domestic crank into the list could not be selected, let alone be owner "fancy" was.
It is understood that, in the eyes of some companies ship machines, crankshaft made imports more attractive than the crankshaft, more impressed by the owner, so they recommend and use of domestic crank enthusiasm was not high. Some foreign-made machine business but never China Sourcing crank, get low-cost advantage, even by some foreign Pin Business sourcing from China Crankshaft, "OEM" and later sold back to China. Thus, high-priced imports of Chinese-made machine companies crank, not only may lose cost advantage, and there is import of "OEM" product risks.
, Of course, objectively speaking, the quality is not perfect homemade crank, for instance, the machining precision products of enterprises with foreign advanced, compared to slightly less. Therefore, the crankshaft manufacturing enterprises need to further strengthen R & D to continuously improve the processing technology, relying on quality to win the boat machine business and the owner's approval. Many hands make light, and only ship machine business enterprises and crankshaft work, really bigger and stronger domestic crankshaft manufacturing industries, which can make "machine axis" of the phenomenon will not be repeated.