원래 장소: | 중국 |
브랜드 이름: | Upperbond |
인증: | CE, ISO |
모델 번호: | 제작자 |
최소 주문 수량: | 50 PC |
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가격: | Negotiable |
포장 세부 사항: | 판지 |
배달 시간: | 5-8 일 |
지불 조건: | T/T, 서부 동맹, MoneyGram, Paypal |
공급 능력: | 10000 PC/달 |
신청: | 절단 담배 막대 | 담배 크기: | 특대/최고/Nano 체중을 줄이십시오 |
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정확도: | 높은과 안정되어 있는 | 녹 증거: | 강화하는 |
반대로 부식: | 보장하는 | 절단기 모양: | 둥근 |
하이 라이트: | Decoufle Nano Final Cutter,King Size Cigarette Filter Cutter |
Decoufle Nano Final Cutter For Cigarette Filter Cutting
Filter Knife is a component of cigarette making machines to slice filter rod after being connected to cigarette rod.
Heat Treatment Of Martensitic Stainless Steels
Austenitizing, where the steel is heated to a temperature in the range 980–1,050 °C (1,800–1,920 °F), depending on grade. The resulting austenite has a face-centered cubic crystal structure.
Tempering. Martensite would be heated to around 500 °C (932 °F), held at such high temperature, then air-cooled. Higher tempering temperatures decrease yield strength and ultimate tensile strength but increase the elongation and impact resistance.
Quenching. The austenite is transformed into martensite, a hard body-centered tetragonal crystal structure. The quenched martensite is too hard and brittle for most applications. Some residual austenite may remain.
Ferritic Stainless Steels
Ferritic stainless steels possess a ferrite micro-structure like carbon steel, which is a body-centered cubic crystal structure, and contain between 10.6% and 27.2% chromium with very little or no nickel. They are magnetic.
This micro-structure is present at all temperatures due to the chromium addition, so they are not hardened by heat treatment. They cannot be strengthened by cold work to the same degree as austenitic stainless steels.
Invention
Robert Bunsen discovered chromium's resistance to strong acids. The corrosion resistance of iron-chromium alloys may have been first recognized in 1821 by Pierre Berthier, who noted their resistance against attack by some acids and suggested their use in cutlery.
In the early 1800s, James Stodart, Michael Faraday, and Robert Mallet observed the resistance of chromium-iron alloys ("chromium steels") to oxidizing agents.
The invention of stainless steel followed a series of scientific developments, starting in 1798 when chromium was first shown to the French Academy by Louis Vauquelin.
담당자: Kiana
전화 번호: +8613824425740
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