The 8N330 that Inc. of foreign diesel engine of rich of Qingdao Zi bavin produces is marine diesel engine crankshaft passed a few days ago " quality final examination " : Equipment the 8N330 boat engine of this crankshaft passed Japanese foreign horse the fast experiment that the company limited organizes.
According to introducing, the component of the 8N330 boat engine that experiments this divides fuel injector is an entrance outside, the others all is homebred. Zi Chai Boyang is passed improve technology, use make the method such as a variety of tool tools, prevent crankshaft treatment to be out of shape, improve journal polish quality, the whole nation that achieved this machine crankshaft is produced turn treatment. Adjusting craft respect, this company will be former fixed position of opening of center of instead of fixed position of collet of two upright craft, grind connecting rod neck to grind main shaft neck again first, a silk is installed in place opening file in grinding process, the change quenchs the means that hold clip, place instead by original rigid outfit flexible outfit clip, refine quench craft parameter, the appropriative that make tool of wooden plywood polish, ensured the treatment efficiency of this crankshaft and quality.
Before this crankshaft assembles boat plane, zi Chai Boyang to its 139 kinds of component undertook detecting, passed Japanese foreign horse smoothly the spot of company limited expert detects, the machine that it is a boat endured fast experiment to lay good foundation.
The test of 8N330 boat engine proved the quality of homebred crankshaft successfully again, make a person glad. Can produce crankshaft as more and more enterprises, mount of homebred boat engine " Chinese heart " the dream is turning into reality. Nevertheless, with respect to integral market situation character, homebred crankshaft still is in in home at present applaud not the condition of draw a large audience: Crankshaft is made homebred changing is the collective desire that shipbuilding group comes for years, every time the enterprise is made in crankshaft on when obtaining progress, industry theres is no lack of the sound that applaud, however, homebred crankshaft was not assembled in great quantities at present homebred boat engine, exit of more instead ground went to abroad.
Someone says, because its quality is not quite good,homebred crankshaft cannot assemble homebred boat plane is, or the distrust because of ship-owner, but after these crankshaft are exporting the nation such as day, Han, be assembled likewise go up with diesel engine in ocean-going vessel, this can satisfy boat confidential to beg with respect to the quality that proves homebred crankshaft. And the distrust of ship-owner, except suffer its outside inherent idea influence, boat aircraft company is responsible also. Occupy the personage inside course of study to mirror, although use whose crankshaft to be decided finally by ship-owner, but can offer to ship-owner before look forward to of boat aircraft company, boat recommend list, if is homebred crankshaft crowds even this one list do not go in, more do not talk to go up to be shipownered " take a fancy to " .
As we have learned, in eye of company of aircraft of a few boats, entrance crankshaft has charm more than homebred crankshaft, can move more ship-owner, accordingly, the initiative that they are recommended and uses homebred crankshaft is not tall. And partial abroad builds aircraft company to purchase crankshaft from China however, gain low advantage, even some foreign agency purchase crankshaft from China, "Stick a card " later sell back China again. This shows, china builds aircraft company high price to import crankshaft, may lose cost dominant position not only, and existence is imported " stick a card " product risk.
Of course, objective and character, homebred crankshaft character is not perfect, the product photograph that processes advanced business of precision and abroad e.g. its is compared, show a bit inferior. Accordingly, crankshaft makes an enterprise must strengthen technical research and development further, improve treatment technology ceaselessly, rely on quality to win the praise of boat aircraft company and ship-owner. Everybody picks up firewood blaze tall, have boat aircraft company and crankshaft company joint efforts only, do truly do the crankshaft inside powerful nation to make an industry greatly, just can make thereby " the axis such as machine " the phenomenon repeats no longer.