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Ductile iron foundry for your interpretation of the nodular cast iron smelting spheroidization agent - how to choose Company news -

by:XEX     2021-03-26
Ductile iron foundry for your interpretation of the nodular cast iron smelting how to choose the nodularizer nodularizer and inoculant is important material in the process of nodulizing treatment, in addition to the stable quality, choose the appropriate spheroidizing agent also need to consider the following factors. Spheroidizing temperature: if the spheroidizing temperature & gt; 1480 ℃, spheroidizing reaction will be more severe, causing the low magnesium absorption rate. In order to make the spheroidizing stable reaction, can choose relatively high calcium content of nodularizer. If the spheroidizing temperature & lt; 1480 ℃, then you can use calcium content is lower relatively, spheroidizing agent. Handle packet size: if processing package high ratio of 1:1, the magnesium steam loss will lead to magnesium absorption rate lower, recommend the use of nodularizer calcium content is higher. If processing package 2:1 ratio of height to diameter, the spheroidizing reaction will be more smoothly, magnesium vapor will spread to the fluid of the iron, magnesium absorption rate was improved. Spheroidizing treatment process: if you do not use cover package method, then the ball reaction smoke will enter into the atmosphere, and creates a dazzling white light. In order to make the spheroidizing stable reaction, can use low high calcium magnesium nodulizing agent. If you use a cover bag method, liquid iron not splash, and smoke less, can use low magnesia calcium nodularizer, to reduce the addition amount, decrease the cost of nodulizing. Processing weight: if the weight is less than 500 kg of iron liquid, then can use particle size smaller nodularizer, it is recommended to use size 12 mm below the spheroidizing agent. If the weight of iron liquid in 500 ~ 1000 kg, but the nodularizer with large size, such as particle size is 3 ~ 25 mm spheroidizing agent. If handled the weight greater than 1000 kg of iron liquid, you can use 4 ~ 32 mm spheroidizing agent. Silica content: if the process of casting products production rate is low or high rejection rate, want to add back to the furnace charge and scrap steel smelting in the form of die castings have strict request for the silicon content of hot metal. On the premise of inoculation quantity was not able to further reduce, the low silicon nodularizer can be used for processing, can make back to the furnace charge more 8% ~ 15%, so can reduce the production cost of foundry. The original iron liquid sulfur content: if the original iron liquid sulfur content is higher, if not for desulfurization process, requires the magnesia high rare earths nodularizer, and join the amount will be higher, if the original iron liquid sulfur content is low, you can use low magnesium rare-earth nodulizing agent, and can lower the dosage, low magnesium rare-earth nodulizing agent cost will be cheaper. Xin er, is located in the big city in the middle of * * * * * * - 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. Company commitment: to the management idea of honest credible, with 'started in user requirements, and finally customer satisfaction' for the purpose of the production and operation, in order to realize the users, enterprises, social three sides the goal of mutual benefit welcome patrons! Keyword: ductile iron foundry article source: http://www. hbtszz。 com/
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