SU63068A1 - Method of casting from malleable cast iron of small products, for example, autotractor candles - Google Patents

Method of casting from malleable cast iron of small products, for example, autotractor candles

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Publication number
SU63068A1
SU63068A1 SU40500A SU332897A SU63068A1 SU 63068 A1 SU63068 A1 SU 63068A1 SU 40500 A SU40500 A SU 40500A SU 332897 A SU332897 A SU 332897A SU 63068 A1 SU63068 A1 SU 63068A1
Authority
SU
USSR - Soviet Union
Prior art keywords
cast iron
candles
casting
autotractor
malleable cast
Prior art date
Application number
SU40500A
Other languages
Russian (ru)
Inventor
А.Ф. Дурниенко
Original Assignee
А.Ф. Дурниенко
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by А.Ф. Дурниенко filed Critical А.Ф. Дурниенко
Priority to SU40500A priority Critical patent/SU63068A1/en
Application granted granted Critical
Publication of SU63068A1 publication Critical patent/SU63068A1/en

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Description

В совремейной технике имеетс  тенденци  к максимальному сокращению технологического пути от сырь  к готовому изделию.In modern technology there is a tendency to maximize the reduction of the technological path from the raw material to the finished product.

Примен емый на заводах СССР метод изготовлени  автотракторных отличаетс  большим тех«ологическим путём, насчить1вающи до 60 операций. В качестве исходного сырь  примен1 ет.с  полуфабрикат- кругла  катана  сталь. При механической обработке «а станках корпуса свечи безвозвратно тер етс  на стружку до 80% металла. Если учесть большие -масштабы производства (миллионы свечей в год), то пон тны большие потери как по дефицитному прокату, так и на станочном оборудовании, pa6o4eii силе и энергии. .The method of manufacturing autotractors used in the factories of the USSR is distinguished by a large number of methods, which can be used for up to 60 operations. As a raw material, it is used with semi-finished round katana steel. During machining, on the case of the candle body, up to 80% of the metal is irretrievably lost to chips. If we take into account the large -scale production (millions of candles per year), then we understand the great losses both in scarce steel and on machine equipment, pa6o4eii strength and energy. .

Согласно изобретению предлагает1с  изготовл ть автотракторные свечи методом отливки под давлени-ем из ковкого перлитного или ферритного чугуна. Дл  этой цели примен етс  доэвтектический чугун (с о держание углерода 3,0-3,75%) с ВЫСОКИМ: содержанием кремен  - 2-2,75% и марганца до 1,2%. Благодар  большой скорости охлаждени  металла прп отливке под давлением, во много раз превышаюш ей скорость графитизации , получаетс  совершенно отбелёна  структура. Однако, благодар  наличию большого количества кремни  цементит будет находитьс  в чрезвычайно метастабильном состо нии. При нагреве до 850 С и выдаче на воздух происходит почти мгновенный распад заэртектоидного цементита с выделением углерода отжига и перлита. При ЭТОМ временное сопротивление достигает 45 кг/мм при удлинении до 6%. При нагреве и выдержке в течение 1 часа при температуре 900° С получают ферритный ковки ii чугун. ПрИ отллвке корпуса свечи из указанной шихты с последуюшей термообработкой механические качества его не уступают качествам стального, механически обработанного корпуса.According to the invention, Icc is proposed to manufacture autotractor candles by casting from ductile pearlite or ferritic cast iron by the method of pressure casting. For this purpose, hypoeutectic cast iron is used (carbon content is 3.0–3.75%) with HIGH: kremen content is 2–2.75% and manganese is up to 1.2%. Due to the high cooling rate of the metal, the casting under pressure, which is many times faster than the graphitization rate, the structure is completely bleached. However, due to the presence of a large amount of silicon, cementite will be in an extremely metastable state. When heated to 850 ° C and discharged into the air, an almost instantaneous disintegration of aero-tectoid cementite occurs with the release of carbon annealing and perlite. At THIS, the temporary resistance reaches 45 kg / mm with an elongation of up to 6%. When heated and aged for 1 hour at a temperature of 900 ° C, ferritic forging ii cast iron is obtained. When it comes to the body of the candle from the specified mixture with subsequent heat treatment, its mechanical qualities are not inferior to those of the steel, machined body.

Лабораторные испытани  отлитых под давлением свечей, а также их испытани  в эксплоатации на автомобиле доказали их полную пригодность к работе.Laboratory tests of pressure-molded candles, as well as their testing in operation on a car, proved their complete suitability for work.

Предмет изобретени Subject invention

Способ отливки из ковкого чугуна мелких изделий, например, автотракторных свечей, отличающ и и с   тем, что издели  заливаютThe method of casting from malleable cast iron of small items, for example, autotractor candles, is also distinguished by the fact that the products are poured

чугуном с содержанием: углерода ЗО-3,75%,кремни  2-2,75%cast iron with the content: carbon ZO-3.75%, silicon 2-2.75%

и марганца 0,7-1,2% к, с целые получени  отбелённой структуры, заливку ведут нод давлением в металлических формах.and manganese, 0.7-1.2%, with the whole production of the bleached structure, the fill is made by pressure in metal molds.

SU40500A 1941-01-27 1941-01-27 Method of casting from malleable cast iron of small products, for example, autotractor candles SU63068A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU40500A SU63068A1 (en) 1941-01-27 1941-01-27 Method of casting from malleable cast iron of small products, for example, autotractor candles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU40500A SU63068A1 (en) 1941-01-27 1941-01-27 Method of casting from malleable cast iron of small products, for example, autotractor candles

Related Child Applications (1)

Application Number Title Priority Date Filing Date
SU802982238A Addition SU925485A2 (en) 1980-09-16 1980-09-16 Method of producing chamfered holes

Publications (1)

Publication Number Publication Date
SU63068A1 true SU63068A1 (en) 1943-11-30

Family

ID=48244084

Family Applications (1)

Application Number Title Priority Date Filing Date
SU40500A SU63068A1 (en) 1941-01-27 1941-01-27 Method of casting from malleable cast iron of small products, for example, autotractor candles

Country Status (1)

Country Link
SU (1) SU63068A1 (en)

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