GB486172A - Improvements in or relating to the manufacture of cylinder liners and the like - Google Patents
Improvements in or relating to the manufacture of cylinder liners and the likeInfo
- Publication number
- GB486172A GB486172A GB1854837A GB1854837A GB486172A GB 486172 A GB486172 A GB 486172A GB 1854837 A GB1854837 A GB 1854837A GB 1854837 A GB1854837 A GB 1854837A GB 486172 A GB486172 A GB 486172A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liner
- expanders
- metal
- heat
- ovality
- 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
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
486,172. Heat - treating; alloys. ANDREWS GRINDING CO., Ltd., H., and ANDREWS, H. July 3, 1937, No. 18548. [Classes 72 and 82 (i)] [Also in Group XXII] In a method of correct ing ovality in cylinder liners, sleeves and like cylindrical articles which have become distorted in hardening or machining, one or more expanders or cramps which over-correct any ovality or distortion are applied to the liner or sleeve, and the liner &c. is heat-treated or tempered with the expanders or cramps in position. If the liner &c. is made of a metal which it is not desired to harden or of which the structure is not to be modified by heat treatment, the liner &c. after the application of the expanders &c. is heated to a temperature up to 450‹ C. which is sufficiently high to relieve stresses in the metal but is not high enough to modify its structure. An example of such a metal is an austenitic cast iron alloy containing 14-15 per cent of nickel, 5-8 of copper and 1À5- 3À0 of chromium, The expander shown in the Figure consists of a pair of blocks b, c having arcuate outer faces of a radius approximately equal to that of the liner and a stud d having right-hand and left-hand screw threads on opposite ends engaging screw-threaded bores in the blocks b, c. The centre of the stud is provided with a nut e for engagement by a spanner. Where a cylinder liner is distorted throughout its length two studs d may be provided which fit into bores in two arcuate bars of the same length as the liner. Instead of an expander an external cramp engaging the outside of the liner at two points and applied to the major axis of the oval liner may be used. The process may be applied to liners which have been quenched from 840‹ C. and tempered at 340-350‹ C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1854837A GB486172A (en) | 1937-07-03 | 1937-07-03 | Improvements in or relating to the manufacture of cylinder liners and the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1854837A GB486172A (en) | 1937-07-03 | 1937-07-03 | Improvements in or relating to the manufacture of cylinder liners and the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB486172A true GB486172A (en) | 1938-05-31 |
Family
ID=10114315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1854837A Expired GB486172A (en) | 1937-07-03 | 1937-07-03 | Improvements in or relating to the manufacture of cylinder liners and the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB486172A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112139291A (en) * | 2020-09-18 | 2020-12-29 | 上海电气上重铸锻有限公司 | Shape correcting device and shape correcting method for deformed large-diameter ellipsoidal seal head |
-
1937
- 1937-07-03 GB GB1854837A patent/GB486172A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112139291A (en) * | 2020-09-18 | 2020-12-29 | 上海电气上重铸锻有限公司 | Shape correcting device and shape correcting method for deformed large-diameter ellipsoidal seal head |
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