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DESIGN
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| Knives' blades are made of the famous Zlatoust forged and hardened stainless steel 110x18M and 40x10C-2M (relatives to steel BG-42 and 440C) and Damascus. Hardness of this steel is >58 Rockwell. Handle of the knives are made of leather or wood: birch bark, birch nodule, walnut. For hilt and guard we are using brown Micarta. On the x-ray image below you can see the internal design of the handle. | |||||||||||||||||||||||||||||||||||||
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| The ancient way of processing of wooden surfaces is applied to qualitative processing of handles. Sanded and carefully polished handle is staining. The stain is a infusion of a cork of various kinds of trees on alchohol base. After staining handle is drying, polishing and within one hour is maintaining in a boiling solution (wax beer, a varnish, etc. components). Then handle is finally polishing. As a result it turns out durable, qualitative and warm handle for a knife with amazing waterproof effect. | |||||||||||||||||||||||||||||||||||||
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The application
of 110x18M steel grade (analog of BG-42)
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| When dealing with precision bearings employed in mission-critical systems where they have to operate without lubrication under high temperature conditions in corrosive mediums, one needs to use a metal of a special chemical composition and as free as possible of nonmetallic inclusions. The research of 1966 ascertained that 110x18M steel grade is the one to meet all requirements. To decrease the content of nonmetallic inclusions, vacuum-arc remelting (VAR) was suggested. | |||||||||||||||||||||||||||||||||||||
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Point
analysis of maximal nonmetallic inclusion content
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| Nitrides Oxides | |||||||||||||||||||||||||||||||||||||
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Conventional remelting 4
points 4
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Metals undergoing double remelting (ESR + VAR) have half as many nonmetallic inclusions as compared with ESR plus a reduced gas component. The metal density is greather than when applying ESR alone. Thanks to that we have better plastic properties, improved polishabiliti, and good strength characteristics. Milled carbides help to grind the blade's edge and keep it constantly sharp. All the above factors prolong the bearing service life. Electroslag remelting process (ESR) is an arcless process of remelting a metal electrode in a flux bath. Electrofluxed metal is noted for its premium quality, lower impurity and gas content, improved micro- and macrostructure, lower anisotrophy (directional property), twice as high mechanical properties, two up to five times more reduced nonmetallic inclusion content (such as oxides, sulphides, globules), higher wear-resistance and contact resistance, plus minor improvment of other characteristics. Electrofluxed metal is used in the production of steels and alloys for defense industry and aircraft industry. Warranty assurance is twenty years. |
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