PL108402B1 - Cast iron for abrasion-resisting castings - Google Patents

Cast iron for abrasion-resisting castings Download PDF

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Publication number
PL108402B1
PL108402B1 PL18838476A PL18838476A PL108402B1 PL 108402 B1 PL108402 B1 PL 108402B1 PL 18838476 A PL18838476 A PL 18838476A PL 18838476 A PL18838476 A PL 18838476A PL 108402 B1 PL108402 B1 PL 108402B1
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PL
Poland
Prior art keywords
cast iron
weight
abrasion
castings
maximum
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Application number
PL18838476A
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Polish (pl)
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Priority to PL18838476A priority Critical patent/PL108402B1/en
Publication of PL108402B1 publication Critical patent/PL108402B1/en

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  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Description

Przedmiotem wynalazku jest zeliwo na odlewy odporne na scieranie. Zeliwo wedlug wynalazku ma zastosowanie na przyklad na przewody ruro¬ we do pneumatycznego transportu materialów roz¬ drobnionych, na korpusy hydrocyklonów i cyklo¬ nów, na elementy mlynów weglowych, wykladzin oczyszczarek strumieniowych.Dotychczas czesci urzadzen narazane na silne dzialanie niszczace poprzez zdzieranie, bruzdowa¬ nie, wykonuje sie z zeliwa bialego martenzytycz- nego lub z zeliwa sferoidalnego. Wada tych two¬ rzyw jest to, ze odlewy z nich wykonane wyka¬ zuja szybkie zuzycie eksploatacyjne, z uwagi na mala odpornosc na scieranie i uderzenia, powo¬ duje to czeste zwarcie i koniecznosc wymiany zu¬ zytych czesci.Celem wynalazku jest opracowanie skladu two¬ rzywa o drobnoziarnistej strukturze, odpornego na scieranie i uderzenia, o malej zawartosci do¬ datków stopowych.Stwierdzono, ze do wyrobu odlewów odpornych na scieranie najlepiej nadaje sie zeliwo zawiera¬ jace obok zawsze spotykanych w zeliwie pier¬ wiastków jak wegiel, krzem, fosfor i siarka, do¬ lo 15 2 datek miedzi w ilosci 2,2—2,6% wagowych, doda¬ tek manganu 0,6—1,2% wagowych i dodatek chro¬ mu 1,8—2,4% wagowych.W zaleznosci od grubosci scianek odlewu oraz przeznaczenia sklad w procentach wagowych ze¬ liwa wedlug wynalazku waha sie w nastepuja¬ cych granicach: wegla 3,1—3,6%, krzemu 0,5— 1,0%, manganu 0,6—1,2%, miedzi 2,2—2,6%, niklu 2,0—2,5%, chromu 1,8—2,4%, fosforu maksymal¬ nie 0,3%, siarki maksymalnie O,150/o.Zeliwo wedlug wynalazku moze byc wytapiane zarówno w zeliwiakach jak i innych piecach sto¬ sowanych do topienia zeliwa.Zastrzezenie patentowe Zeliwo na odlewy odporne na scieranie zawie¬ rajace wagowo 3,1—3,6% wegla, 0,5—1,0% krze¬ mu, maksimum 0,3% fosforu, maksimum 0,15% siarki, znamienne tym, ze jako dodaltki stopowe zawiera 2,2^2,6% wagowych miedzi, 0,6—1,2% wagowych manganu, 2,0—2,5% wagowych niklu i 1,8—2,4% wagowych chroirnu^ 108 402 PLThe subject of the invention is an abrasion-resistant cast iron. According to the invention, cast iron is used, for example, for tubing for the pneumatic transport of particulate materials, for hydrocyclones and cyclones, for elements of coal mills, and for jet blast liners. no, they are made of white martensitic cast iron or nodular cast iron. The disadvantage of these plastics is that the castings made of them show a quick wear and tear, due to the low abrasion and impact resistance, this results in frequent short circuits and the need to replace the worn parts. Curve with a fine-grained structure, resistant to abrasion and impact, with a low content of alloying additives. It has been found that for the production of abrasion-resistant castings, cast iron containing elements such as carbon, silicon, phosphorus, apart from the elements that are always found in cast iron and sulfur, an addition of copper in an amount of 2.2-2.6% by weight, an addition of manganese 0.6-1.2% by weight and an addition of chromium 1.8-2.4% by weight. Depending on the wall thickness of the casting and the intended use, the composition in percentages by weight of cast iron according to the invention ranges as follows: carbon 3.1-3.6%, silicon 0.5-1.0%, manganese 0.6- 1.2%, copper 2.2-2.6%, nickel 2.0-2.5%, chromium 1.8-2.4%, phosphorus 0.3% maximum, sulfur maximum 0.150% o.Zeliw According to the invention, it can be smelted both in cupolas and other furnaces used for melting cast iron. Patent claim Cast iron for wear-resistant castings, containing 3.1-3.6% by weight of carbon, 0.5-1.0% by weight silicon, maximum 0.3% phosphorus, maximum 0.15% sulfur, characterized in that as alloying additives it contains 2.2-2.6% by weight of copper, 0.6-1.2% by weight of manganese, 2 0-2.5% by weight of nickel and 1.8-2.4% by weight of chroirnium, 108,402 PL

Claims (1)

1. Zastrzezenie patentowe Zeliwo na odlewy odporne na scieranie zawie¬ rajace wagowo 3,1—3,6% wegla, 0,5—1,0% krze¬ mu, maksimum 0,3% fosforu, maksimum 0,15% siarki, znamienne tym, ze jako dodaltki stopowe zawiera 2,2^2,6% wagowych miedzi, 0,6—1,2% wagowych manganu, 2,0—2,5% wagowych niklu i 1,8—2,4% wagowych chroirnu^ 108 402 PL1. Patent claim Cast iron for wear-resistant castings, containing 3.1-3.6% by weight of carbon, 0.5-1.0% of silicon, maximum 0.3% of phosphorus, maximum 0.15% of sulfur, characterized by having as alloying additives 2.2-2.6% by weight of copper, 0.6-1.2% by weight of manganese, 2.0-2.5% by weight of nickel and 1.8-2.4% by weight of chroirnu ^ 108 402 PL
PL18838476A 1976-03-30 1976-03-30 Cast iron for abrasion-resisting castings PL108402B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL18838476A PL108402B1 (en) 1976-03-30 1976-03-30 Cast iron for abrasion-resisting castings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL18838476A PL108402B1 (en) 1976-03-30 1976-03-30 Cast iron for abrasion-resisting castings

Publications (1)

Publication Number Publication Date
PL108402B1 true PL108402B1 (en) 1980-04-30

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Application Number Title Priority Date Filing Date
PL18838476A PL108402B1 (en) 1976-03-30 1976-03-30 Cast iron for abrasion-resisting castings

Country Status (1)

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PL (1) PL108402B1 (en)

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