Ductile iron foundry told spheroidizing way of nodular cast
Spheroidizing mode commonly used at present has the following kinds: package handling method (
Including straight at, sandwiches and cover package method)
Type, the spheroidizing method, flow method, pure magnesium treatment (
Including the subcontract and packet core method)
Regarding the ball and the advantages and disadvantages of the mode of simple introduction here.
Package processing method: this is a common spheroidizing process, application range, small to a few kilograms of auto parts, large to dozens of tons of wind power can make use of the process.
To cover package method of magnesium absorption rate is high, the second is the sandwich method.
The disadvantage is that the degree of automation is not high, the domestic some equipment factory of developing automatic feeding system.
Type in spheroidizing method: now a lot of foundry is not using this technology, because of this process are the obvious shortcomings, spheroidizing produce pulp are sometimes into the cavity, caused slag defects and waste generation.
In addition, the spheroidizing process on the temperature of molten irons and iron liquid flow demand is higher, otherwise spheroidizing uneven.
Flowing law: as the name implies, is iron liquid flowing method through the balling room containing nodularizer and spheroidizing, the current technology used is not too much.
Some advantages are relatively high degree of automation;
The disadvantage is that the more strict iron liquid temperature, and iron liquid velocity.
Pure magnesium nodulizing process, sometimes called the magnesia spheroidizing process, at present there are mainly two forms, subcontracting and packet core method.
The advantage of this approach is a high degree of automation, but also conducive to environmental protection;
Defect is magnesium absorption rate is low, smoke and pulp are more.
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Entrance of wuhan city west, hanchuan textile industrial park, is one of the professional manufacturer of ductile pipe fittings and spare parts.
Company's main: hanland pipe fittings, ductile iron pipe fittings, ductile cast iron, ductile iron pipes in 2004, the company invested nearly ten million yuan has introduced new factories and new levels of domestic EPS a vacuum mold production line, has formed four thousand tons scale, can provide users with in accordance with ISO2531 standard brick and various types of DN100 - various interfaces
DN800mm of more than 3000 kinds of products, can also according to customer's need to produce all kinds of non-standard pipe fittings and accessories, the company integrating scientific research, production and service, may at any time to provide technical advice and on-site service.
Company has all kinds of advanced testing equipment, well-equipped, advanced technology, in strict accordance with ISO9002 instruction system and Swiss SGSIS9002 quality system of organizing production, the production of ball pipes pieces, with its high strength, good toughness, excellent characteristics of high pressure resistance, corrosion resistance, with the essence of the iron pipe steel tube performance, is a traditional cast iron pipe of updated products, widely used in water, gas and liquid gas pressure conveying, now is in most provinces, the city's urban water supply, gas supply engineering has the close relationship between supply and demand, well received by users.
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