GB1126461A - Improvements in or relating to safety razor blades - Google Patents
Improvements in or relating to safety razor bladesInfo
- Publication number
- GB1126461A GB1126461A GB1356764A GB1356764A GB1126461A GB 1126461 A GB1126461 A GB 1126461A GB 1356764 A GB1356764 A GB 1356764A GB 1356764 A GB1356764 A GB 1356764A GB 1126461 A GB1126461 A GB 1126461A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strip
- austenite
- press
- cooling
- temperature
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/60—Making other particular articles cutlery wares; garden tools or the like
- B21D53/64—Making other particular articles cutlery wares; garden tools or the like knives; scissors; cutting blades
- B21D53/645—Making other particular articles cutlery wares; garden tools or the like knives; scissors; cutting blades safety razor blades
-
- 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
- C21D9/18—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for knives, scythes, scissors, or like hand cutting tools
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
1,126,461. Improving physical properties. WILKINSON SWORD Ltd., and UDDEHOLMS A.B. 14 Sept., 1965 [2 April, 1964], No. 13567/64. Headings B3A and B3V. [Also in Division C7] A method of manufacturing razor blade strip from steel which, at an elevated temperature, contains metastable austenite comprises reducing the cross-section of at least one edge of the strip at said temperature to deform the austenite, and subsequently cooling the strip to transform the austenite to martensite. The process hardens the edge and increases toughness, fatigue strength and proof stress. Corrosion-resistant steels that may be used contain 10-20% Cr. They may also contain :- In an example, a strip of blades joined endto-end is annealed at 800-1200‹ C. in a furnace to form austenite. A cooling muffle reduces the strip-temperature as the strip is passed to a press where the edges are deformed between 30 and 95% at 300-800‹ C. An inert or reducing atmosphere, e.g. of cracked ammonia, may be maintained in the furnace, muffle and the press. Instead of using a press, the whole strip may be reduced by rolling or forging to deform the austenite. On leaving the press, the strip is hardened by quenching between water-cooled chill blocks, by natural cooling or by quenching in water or oil. Further cooling to minus 78‹ C. may follow. The edges may be finished at least partly by the electrolytic process described in Specification 1,096,411, to which reference is made. The blades may be given a polymer coating. Specification 1,126,462 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1356764A GB1126461A (en) | 1964-04-02 | 1964-04-02 | Improvements in or relating to safety razor blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1356764A GB1126461A (en) | 1964-04-02 | 1964-04-02 | Improvements in or relating to safety razor blades |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1126461A true GB1126461A (en) | 1968-09-05 |
Family
ID=10025299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1356764A Expired GB1126461A (en) | 1964-04-02 | 1964-04-02 | Improvements in or relating to safety razor blades |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1126461A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ305175B6 (en) * | 2013-04-22 | 2015-05-27 | Západočeská Univerzita V Plzni | Process for producing steel parts |
| CN112122103A (en) * | 2020-09-15 | 2020-12-25 | 贵州紫日茶业科技有限公司 | Seedling medicine tea pillow raw and other materials screening plant |
-
1964
- 1964-04-02 GB GB1356764A patent/GB1126461A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ305175B6 (en) * | 2013-04-22 | 2015-05-27 | Západočeská Univerzita V Plzni | Process for producing steel parts |
| CN112122103A (en) * | 2020-09-15 | 2020-12-25 | 贵州紫日茶业科技有限公司 | Seedling medicine tea pillow raw and other materials screening plant |
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