SU676380A2 - Method of producing iron casting in chill mould - Google Patents
Method of producing iron casting in chill mouldInfo
- Publication number
- SU676380A2 SU676380A2 SU782585758A SU2585758A SU676380A2 SU 676380 A2 SU676380 A2 SU 676380A2 SU 782585758 A SU782585758 A SU 782585758A SU 2585758 A SU2585758 A SU 2585758A SU 676380 A2 SU676380 A2 SU 676380A2
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- casting
- iron casting
- producing iron
- chill mould
- chill
- Prior art date
Links
Landscapes
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Description
Отливают такую же заготовку по предлагаемому способу, заливают чугун. Через 25 с образуют зазор, т. е. экранируют теплоту , излучаемую отливкой. В течение 25с экранировани цементит в корочке отливки распадаетс полностью.Cast the same billet on the proposed method, cast iron is poured. After 25 s they form a gap, i.e. they shield the heat radiated by the casting. Within 25 seconds of shielding, the cementite in the casting crust disintegrates completely.
Через 50 с после начала заливки экранирование прерывают (свод т секторы кокил вплотную к отливке).Fifty seconds after the start of pouring, the screening is interrupted (the sectors of the mold are reduced close to the casting).
Скорость затвердевани центральной части отливки увеличиваетс (кокиль захолаживает через корочку жидкий металл) и через 20 с после свода кокил отливка полностью затвердевает, после чего экранирование возобновл ют. Отливка без отбела (корочка отожглась в период экранировани ), остальна часть отливки имеет мелкозернистую , плотную структуру с твердостью 240-250 НВ (вследствие ускоренного затвердевани в период прерывани экранировани ).The rate of solidification of the central part of the casting increases (the metal mold re-quenches the liquid metal through the crust) and after 20 seconds after the body of the mold the casting solidifies completely, after which the shielding is resumed. Casting without chill (the crust burned during the screening period), the rest of the casting has a fine-grained, dense structure with a hardness of 240-250 HB (due to accelerated solidification during the screening interruption period).
Предлагаемый способ позвол ет получить отливку с более мелкозернистой и плотной структурой и повысить ее твердость , т. е. улучшить ее качество.The proposed method allows to obtain a casting with a finer-grained and dense structure and increase its hardness, i.e., improve its quality.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU782585758A SU676380A2 (en) | 1978-03-01 | 1978-03-01 | Method of producing iron casting in chill mould |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU782585758A SU676380A2 (en) | 1978-03-01 | 1978-03-01 | Method of producing iron casting in chill mould |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU495147 Addition |
Publications (1)
Publication Number | Publication Date |
---|---|
SU676380A2 true SU676380A2 (en) | 1979-07-30 |
Family
ID=20751556
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU782585758A SU676380A2 (en) | 1978-03-01 | 1978-03-01 | Method of producing iron casting in chill mould |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU676380A2 (en) |
-
1978
- 1978-03-01 SU SU782585758A patent/SU676380A2/en active
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