산동 Jiugang Tisco Steel Co., (주).
Due to the different uses of each product, the processing technology and quality requirements of raw materials are also different. Generally speaking, different 스테인레스 스틸 products require different thickness tolerances of raw materials, such as second-class tableware and thermos cups, 등., the thickness tolerance is generally higher, which is -3~5%, and the thickness tolerance of first-class tableware generally requires – 5%, steel pipes require -10%, hotel freezer material thickness tolerance requirements are -8%, dealers generally require thickness tolerances between -4% 그리고 6%. At the same time, the difference in domestic and foreign sales of products will also lead to different requirements of customers on the tolerance of raw material thickness. 일반적으로, export product customers have higher thickness tolerance requirements, while domestic sales companies have relatively lower thickness tolerance requirements (mostly due to cost considerations), and some customers even require -15%.
① DDQ (deep drawing quality) material: refers to the material used for deep drawing (punching), 그건, the so-called soft material. The main characteristics of this material are high elongation (≧53%) and relatively high hardness. Low (≦170%), the internal grain grade is between 7.0 그리고 8.0, and the deep drawing performance is excellent. Many enterprises that produce vacuum flasks and pans generally have relatively high processing ratios (BLANKING SIZE/product diameter), and their processing ratios reach 3.0, 1.96, 2.13, 그리고 1.98 respectively. SUS304DDQ materials are mainly used for products that require a higher processing ratio. 물론, products with a processing ratio exceeding 2.0 generally need to be stretched several times to complete. If the raw material extension cannot be achieved, the product is prone to cracks and pull-through phenomena when processing deep-drawn products, which will affect the qualified rate of finished products, and of course increase the cost of the manufacturer;
②General material: mainly used for materials other than DDQ. This material is characterized by relatively low elongation (≧45%), relatively high hardness (≦180HB), and internal grain size grades of 8.0~9.0 Compared with DDQ materials, its deep drawing performance is relatively poor. It is mainly used for products that can be obtained without stretching, such as spoons, 숟가락, 포크, electrical appliances, and steel pipes for tableware. But it has an advantage compared with DDQ material, 그건, the BQ property is relatively better, which is mainly due to its slightly higher hardness.
스테인레스 스틸 sheet is an inexpensive material, but customers have very high requirements on its surface quality. In the production process of stainless steel sheet, there will inevitably be various defects, such as scratches, pits, sand holes, dark lines, creases, pollution, 등., so its surface quality, such as scratches, creases, 등. It is not allowed to appear, and defects such as pitting and sand holes are never allowed in the production of spoons, 숟가락, 포크, because it is difficult to throw them away when polishing. It is necessary to determine the surface quality level according to the degree and frequency of various defects on the surface, so as to determine the product level.
스테인리스강은 종종 마르텐사이트강으로 나뉩니다., 페라이트계 강, 오스테나이트계 강, 오스테나이트계-페라이트계 (듀플렉스) stainless steel and precipitation hardening stainless steel according to the organizational state. 게다가, 로 나눌 수 있다: 크롬 스테인레스 스틸, 크롬-니켈 스테인리스강 및 크롬 망간 질소 스테인리스강. 압력 용기용 특수 스테인리스 스틸도 있습니다. “GB24511_2009_압력 장비용 스테인리스 강판 및 스트립”.
산동 Jiugang Tisco Steel Co., (주). 아름다운 봄의 도시 제남에 위치하고 있습니다. ,산동성의 수도. 우리 회사는 RMB 이상으로 자본금을 등록했습니다. 50 백만. R을 통합한 종합그룹사입니다.&디, 생산, 철강제품 판매 및 서비스.
스테인레스 스틸 또는 탄소강에 관심이 있는 경우,문의하시기 바랍니다. 전화: +86-13375310907 이메일: Jgtisco@gmail.com
