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Molten cast iron in the iron manganese removal methods and manufacturing methods


, Huaxin Town, Qingpu District, Shanghai Jihe Gong Road, No. 2618 air conditioner compressor of the invention provides a ductile iron crankshaft and its preparation method. Products, the amount of pearlite in the range of 30% -70%,[link widoczny dla zalogowanych], the overall difference between the amount of less than 20% pearlite. Hardness range of 175-240HB; overall hardness difference is less than 38HB. Preparation of parts of the crankshaft on the crankshaft axis of the riser end, an increase of sn elements and reduce the cr, Ti content, the use of open-casting system. Hardness difference between the crankshaft body is small, the overall decrease in hardness, good processing performance; improved product pearlite money; reduce the porosity of the product and the production of slag defects and reduce the rejection rate and improve the market competitiveness. Patent number: 02116448.7 open No.: 1,450,189 Patent Title: Non-magnetic cast iron and its application the applicant: Pei Shan Address: (040000) Dunhua Square Street, Taiyuan, Shanxi Province No. 22, row 76 No 3, a non-magnetic cast iron is determined shape products, the production of an iron alloy with people and quenching technology, application, an electrical equipment compartment magnetic field of magnetic components. Because of their non-magnetic cast iron is not magnetic and electrical devices can be used instead of magnetic, magnetic isolation of stainless steel, copper or aluminum alloy components. The production methods and by quenching alloys with two ways to obtain and maintain the austenitic matrix to achieve the non-magnetic effect. Permeability of such materials is less than 1.1, the power devices because of its non-magnetic, can reduce the loss of the magnetic vortex, with its production of electrical equipment, accessories,[link widoczny dla zalogowanych], magnetic effects and the use of magnetic isolation effect is very good, and stainless steel, copper or aluminum compared to its production process is simple, low cost. Patent number: 03121204.2 open No.: 1,448,521 Patent Title: Iron in the molten iron manganese removal methods and manufacturing methods Applicant: Asahi Technology Co., Ltd. Address: Shizuoka present invention provides a cast iron melt in the manganese removal methods, the present invention is characterized in that the sodium sulfate (Na2SOa) added as an additive mixed into the molten iron in; or to sodium sulfide (Na2S) added as an additive mixed into the molten iron in; or hydrogen sulfide (NariS) added as an additive mixed in to the cast iron melt. The method even if the Mn content and low-cost scrap as a raw material used can also reduce the tensile strength of the case do not improve the high-extension characteristics of extension of the cast iron. The invention also provides a method of manufacturing iron. Patent number: 02109371.7 open No.: 1,448,527 Patent Title: wear-resistant alloy of high refinement and manufacturing methods ball Applicant: Wen Xuedong; Shu-Xun Wang; Li Jing source; Wang Xinyu Address: (122000) Twin Towers District, Chaoyang City, Liaoning Province, State Road 36 Camp -1 ball high wear-resistant alloy refining and manufacturing methods, 1. Composition of carbon, chromium, manganese, silicon, titanium, bauxite, copper, aluminum, boron, scrap steel and cast iron; 2. Process of cast iron and steel scrap is melted into a furnace after adding manganese, chromium, copper, silicon, and then lift the bottom of the package elements such as Al-Ti-red solution, playing slag casting, molding the ball. The cast microstructure of the ball is eutectic carbides and tempered martensite, Rockwell hardness of 54-55 degrees. Patent number: 03114581.7 open No.: 1,439,738 Patent Title: Multiple high-chromium cast iron sieve and manufacturing methods Applicant: Xi'an Jiaotong University Address: (710049) Xianning Road, Xi'an, Shaanxi Province, 28 of the present invention discloses a types of vibrating screen for various types of multi-sintering of high-chromium cast iron sieve and its manufacturing method, the chemical composition (wt%) :2.2-3 .2 C ,18-28Cr ,0.6-1 .5 Mn ,0.4-1 .0 Si ,0.4-1 .5 Mo ,0.5-1 .2 Ni ,0.1-0 .5 Nb ,[link widoczny dla zalogowanych],0.02-0 .08 Ca ,[link widoczny dla zalogowanych],0.008-0 .050 Zn ,0.002-0 .010 Mg ,0.03-0 .10 Ce ,0.08-0 .15 Ti. The remainder Fe and inevitable impurities. Sieve using electric furnace production of the present invention, the use of chilled resin sand casting, sieve high bending strength, reaching 890-960MPa, hardness 55-60HRC,[link widoczny dla zalogowanych], has good abrasion resistance, impact toughness 10-13J/cm, use is not broken, good oxidation resistance, better performance than using heat-resistant steel sieve CrMnN, the production process is simple, does not require heat treatment and thus the production cost is low. Sieve the present invention can significantly improve the shaker operating rate and reduce the cost of sinter screening, with good economic efficiency,
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