GB495819A - Improvements in or relating to the production of grey cast iron - Google Patents
Improvements in or relating to the production of grey cast ironInfo
- Publication number
- GB495819A GB495819A GB3151238A GB3151238A GB495819A GB 495819 A GB495819 A GB 495819A GB 3151238 A GB3151238 A GB 3151238A GB 3151238 A GB3151238 A GB 3151238A GB 495819 A GB495819 A GB 495819A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- ferrite
- silicon
- manganese
- chromium
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/08—Manufacture of cast-iron
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
An all-pearlitic (which may be partly or wholly sorbitic) structure with possible traces of cementite, but no free ferrite whatsoever, is produced in grey iron castings made in cold moulds of sand or other refractory material or in hot or cold metal moulds and containing materials which inhibit and promote the formation of ferrite, by altering (a) the quantity of ferrite-promoting material (which must always be so high as normally to produce a ferritic casting), (b) the quantity of ferrite-inhibiting material, and (c) the rate of cooling of the casting as determined by its section and, in the case of metal moulds, the mould-temperature, the method being carried out without superheating the mixture to such a high temperature before pouring the casting that its structure would be affected thereby. The ferrite-promoting material may be one or more of silicon, nickel, or copper in amount equivalent to 2-7 per cent of silicon, it being reckoned that 0,4 per cent of silicon is equivalent to 1 per cent of nickel and 0,35 per cent of silicon is equivalent to 1 per cent of copper, no more than 3,5 per cent of nickel and 4 per cent of copper being, however, present. The ferrite-inhibiting material may be one or more of chromium, manganese, or molybdenum in amount up to 6 per cent, up to 3,5 per cent, and up to 1,5 per cent respectively, it being reckoned that 0,3 per cent of molybdenum is approximately equal to 0,2 per cent of chromium and 0,25 per cent of manganese (after the first 1,75 per cent of manganese which is stated to be without effect) being equal to 0,15 per cent of chromium. The inhibiting-material may be added to the cast in the pouring-ladle, the cast preferably containing a quantity of scrap from a previous operation. British Specifications 147,933, [Class 82 (i)], 495,475, and 495,820, and U.S.A. Specification 1,910,034 are referred to. Reference has been directed by the Comptroller to Specification 245,196, [Class 82 (i)].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3151238A GB495819A (en) | 1937-02-10 | 1937-02-10 | Improvements in or relating to the production of grey cast iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3151238A GB495819A (en) | 1937-02-10 | 1937-02-10 | Improvements in or relating to the production of grey cast iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB495819A true GB495819A (en) | 1938-11-10 |
Family
ID=10324185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3151238A Expired GB495819A (en) | 1937-02-10 | 1937-02-10 | Improvements in or relating to the production of grey cast iron |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB495819A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5980651A (en) * | 1995-12-04 | 1999-11-09 | De Azevedo; Altemicio Rodrigues | Process to obtain parts of high carbon gray cast iron and high carbon gray cast iron material in special to manufacture rotors and drum brake systems and general automotive application with noise absorption |
| CN114836676A (en) * | 2022-04-26 | 2022-08-02 | 保定市东利机械制造股份有限公司 | Production formula and process method of high-chromium scrap steel for enamel furnace frame |
| CN115725891A (en) * | 2021-08-31 | 2023-03-03 | 通用汽车环球科技运作有限责任公司 | High modulus, high strength and low alloy gray cast iron for cylinder liners and automotive applications |
-
1937
- 1937-02-10 GB GB3151238A patent/GB495819A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5980651A (en) * | 1995-12-04 | 1999-11-09 | De Azevedo; Altemicio Rodrigues | Process to obtain parts of high carbon gray cast iron and high carbon gray cast iron material in special to manufacture rotors and drum brake systems and general automotive application with noise absorption |
| CN115725891A (en) * | 2021-08-31 | 2023-03-03 | 通用汽车环球科技运作有限责任公司 | High modulus, high strength and low alloy gray cast iron for cylinder liners and automotive applications |
| CN115725891B (en) * | 2021-08-31 | 2023-11-21 | 通用汽车环球科技运作有限责任公司 | High modulus, high strength and low alloy gray cast iron for cylinder liner and automotive applications |
| CN114836676A (en) * | 2022-04-26 | 2022-08-02 | 保定市东利机械制造股份有限公司 | Production formula and process method of high-chromium scrap steel for enamel furnace frame |
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