TWI399440B - Method of Casting Casting of Refined Stainless Steel - Google Patents
Method of Casting Casting of Refined Stainless Steel Download PDFInfo
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- TWI399440B TWI399440B TW98120239A TW98120239A TWI399440B TW I399440 B TWI399440 B TW I399440B TW 98120239 A TW98120239 A TW 98120239A TW 98120239 A TW98120239 A TW 98120239A TW I399440 B TWI399440 B TW I399440B
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- stainless steel
- casting
- antibacterial
- silver
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- 238000005266 casting Methods 0.000 title claims description 38
- 229910001220 stainless steel Inorganic materials 0.000 title claims description 36
- 239000010935 stainless steel Substances 0.000 title claims description 36
- 238000000034 method Methods 0.000 title claims description 20
- 230000000844 anti-bacterial effect Effects 0.000 claims description 54
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 26
- 229910052709 silver Inorganic materials 0.000 claims description 26
- 239000004332 silver Substances 0.000 claims description 26
- 229910001039 duplex stainless steel Inorganic materials 0.000 claims description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 238000003723 Smelting Methods 0.000 claims description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 12
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 229910052786 argon Inorganic materials 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 229910000859 α-Fe Inorganic materials 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000009826 distribution Methods 0.000 claims description 2
- 238000009827 uniform distribution Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims 1
- 239000000758 substrate Substances 0.000 description 20
- 241000894006 Bacteria Species 0.000 description 12
- 238000012360 testing method Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 239000010410 layer Substances 0.000 description 6
- 241000588724 Escherichia coli Species 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 241000191967 Staphylococcus aureus Species 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 230000001580 bacterial effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 3
- 229910001316 Ag alloy Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 235000012054 meals Nutrition 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000003679 aging effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006557 surface reaction Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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- Apparatus For Disinfection Or Sterilisation (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Description
本發明有關於一種抗菌不銹鋼精密脫腊鑄造鑄件之方法，其係利用雙相不銹鋼材料添加銀並在大氣熔煉，且於出爐前將稀土元素加入至鋼水中，即可藉由精密脫腊鑄造流程來澆鑄完成抗菌不銹鋼之鑄件。The invention relates to a method for precision dewaxing casting casting of antibacterial stainless steel, which is characterized in that silver is added by duplex stainless steel material and smelted in the atmosphere, and rare earth element is added to molten steel before being discharged, and the casting process can be carried out by precision dewaxing. Casting finished antibacterial stainless steel castings.
按，傳統之不銹鋼鑄件，大都採用300系列或400系列之不銹鋼基材製成，雖其強度夠但抗菌及抗腐蝕能力顯然不足，因此若用於餐鍋刀具、醫療器械或食品機械設備等與人體接觸或提供食用之鑄件上，容易滋生細菌及不耐腐蝕，所以使用效率及壽命均不佳，尤其安全性堪虞。至於目前應用於抗菌之不銹鋼產品，依照其製造方法可分為下述幾種：According to the traditional stainless steel castings, most of them are made of 300 series or 400 series stainless steel substrates. Although their strength is sufficient, the antibacterial and anti-corrosion ability is obviously insufficient. Therefore, if it is used for meal pot cutters, medical equipment or food machinery equipment, etc. The human body is in contact with or provides edible castings, which are easy to breed bacteria and are not resistant to corrosion, so the use efficiency and longevity are not good, especially safety. As for the stainless steel products currently used for antibacterial, according to the manufacturing method thereof, it can be divided into the following types:
(一)表面塗層抗菌不銹鋼：係為一種光觸媒的塗漆不銹鋼板，可分為有機及無機塗漆不銹鋼板，其主要採用噴塗法將分散有一定粒度氧化鈦粉的矽系無機塗料噴塗固定於不銹鋼板表面上，塗層厚度約2～4μm，對於大腸桿菌和黃色葡萄球菌的抗菌效果極佳，也具有防霉效果，但最大的缺失是不能夠長期保持其抗菌效果。(1) Surface coating antibacterial stainless steel: It is a photocatalyst painted stainless steel plate, which can be divided into organic and inorganic painted stainless steel plates. It is mainly sprayed to fix the lanthanum inorganic coating with a certain size of titanium oxide powder. On the surface of the stainless steel plate, the coating thickness is about 2 to 4 μm. It has excellent antibacterial effect against Escherichia coli and Staphylococcus aureus, and also has anti-mildew effect, but the biggest deficiency is that it cannot maintain its antibacterial effect for a long time.
(二)金屬複合抗菌不銹鋼：主要都是用於必需具備抗菌性的廚房用菜刀及剪刀等，而此種複合刀具係從暴露的銅層部分溶出銅離子來發揮其抗菌性，且表層材料較軟，所以容易複合和研磨加工，該複合材料之韌性高，並由於銅層的冷卻效果，提高刀口部芯材的淬火硬度，但添加銅的抗菌不銹鋼必須多經過一道熱處理手續，相對也增加製造成本。(2) Metal composite antibacterial stainless steel: mainly used for kitchen kitchen knives and scissors, which are required to have antibacterial properties, and the composite cutter partially dissolves copper ions from the exposed copper layer to exert its antibacterial property, and the surface material is more Soft, so it is easy to compound and grind, the toughness of the composite is high, and the quenching hardness of the core of the knife edge is improved due to the cooling effect of the copper layer. However, the antibacterial stainless steel added with copper must undergo a heat treatment procedure, and the manufacturing is relatively increased. cost.
(三)表面改性抗菌不銹鋼：主要採用Sputter、PVD、CVD方式於不銹鋼表層形成抗面層，目前較進步係採用微粒噴射硬化法進行抗菌層生成，其係將銅或銀微粒離子化後，再利用高壓噴射到不銹鋼表面，形成抗菌表層，但最大缺失在於材料尺寸、大小受限於製造設備的尺寸，若要進行連續性生產仍有一定的難度。(3) Surface-modified antibacterial stainless steel: Sputter, PVD, and CVD methods are mainly used to form the anti-surface layer on the surface of the stainless steel. At present, the antibacterial layer is formed by the particle jet hardening method, which is obtained by ionizing copper or silver particles. The high-pressure spray is applied to the surface of the stainless steel to form an antibacterial surface layer, but the biggest drawback is that the size and size of the material are limited by the size of the manufacturing equipment, and it is still difficult to carry out continuous production.
(四)添加抗菌元素之抗菌不銹鋼：所有的材料開發最終仍是有使用壽命上的限制，所以若能添加抗菌元素於基材內才是最佳的選擇，因為其抗菌時效最長且抗菌效果最佳，尤其不會有鍍層剝落的情形發生，更不會因磨損而減少抗菌力，並可保有不銹鋼本身特性及具高度安全性。(4) Antibacterial stainless steel with antibacterial elements: All materials development still has a limitation on service life, so it is the best choice if antibacterial elements can be added to the substrate because it has the longest antibacterial aging effect and the most antibacterial effect. Good, especially if there is no peeling of the coating, and it will not reduce the antibacterial force due to wear, and it can retain the characteristics of the stainless steel itself and is highly safe.
本發明係有關於一種抗菌不銹鋼精密脫腊鑄造鑄件之方法，其係利用雙相不銹鋼材料，添加銀在大氣熔煉，形成抗菌不銹鋼合金，並在出爐之前將稀土元素添加至鋼水中，然後配合精密脫腊鑄造流程，將抗菌不銹鋼鋼水濤鑄在產品殼膜中，完成後之鑄品再經過熱處理，使其材質均勻化。且本發明採用雙相不銹鋼基材，不同於300系列或400系列之不銹鋼基材，所以熔煉過程中加入銀的時機佔有極重要關鍵，再配合出爐前添加稀土元素，可使澆鑄之鑄品具有極佳之抗菌、耐蝕功效。且其係為一種抗菌之合金材料，因此不會有鍍層剝落或因磨損而影響其抗菌效果，對於餐鍋刀具、醫療器械或食品機械設備等皆非常適用，安全性又高，並提高產品使用壽命，而能增加產品的附加價值。The invention relates to a method for antibacterial stainless steel precision dewaxing casting casting, which utilizes duplex stainless steel material, adds silver to smelt in the atmosphere, forms an antibacterial stainless steel alloy, and adds rare earth element to molten steel before being baked, and then cooperates with precision In the dewaxing casting process, the antibacterial stainless steel steel is cast into the shell film of the product, and the finished casting is subjected to heat treatment to homogenize the material. The invention adopts a duplex stainless steel substrate, which is different from the 300 series or 400 series stainless steel substrate, so the timing of adding silver during the smelting process occupies a very important key, and the rare earth element is added before the furnace to make the cast casting have Excellent antibacterial and anti-corrosion effect. And it is an antibacterial alloy material, so there is no peeling of the coating or its antibacterial effect due to abrasion. It is very suitable for the cooking pot cutter, medical equipment or food machinery equipment, and has high safety and improves product use. Life expectancy and increase the added value of the product.
首先，請參閱第一圖所示，係本發明之流程圖，先選用雙相不銹鋼之基材11，做為熔煉合金之材料，該雙相不銹鋼係同時具有肥粒鐵相及沃斯田鐵相的組織型態，而熔煉13過程中係施以液態氬氣12，可以保護，用來防止金屬表面產生反應現象，而在熔煉過程中，銀14的添加時機佔有一極重要因素，其必需在雙相不鈞鋼基材11進行熔煉13至一半時，先行將電源關閉，然後馬上將銀14加入至鋼水中，利用這樣的添加方式，可以避免高週波爐之攪拌作用，使銀14漂浮於鋼水的表面，造成不均勻之現象。至於當鋼水熔煉13完成即將出爐16之前，在鋼水中添加有稀土元素15，可以幫助加入之銀14的均勻分布。First, referring to the first figure, the flow chart of the present invention first selects the substrate 11 of duplex stainless steel as the material of the smelting alloy, and the duplex stainless steel has both the ferrite phase and the Worthite iron. The structure of the phase, while the process of smelting 13 is applied with liquid argon 12, which can be used to prevent the reaction on the metal surface. In the smelting process, the timing of the addition of silver 14 is an important factor. When the two-phase stainless steel substrate 11 is smelted 13 to half, the power is turned off first, and then the silver 14 is immediately added to the molten steel. With such an addition, the stirring of the high-frequency furnace can be avoided, and the silver 14 is floated. On the surface of molten steel, it causes unevenness. As for the addition of the rare earth element 15 to the molten steel before the molten steel smelting 13 is completed, the uniform distribution of the added silver 14 can be assisted.
其次，請仍然參閱第一圖所示，本發明之雙相不銹鋼的熔煉方式，有別於一般真空熔煉之製造方式，而係採用大氣熔煉，因此可以提供未來大型鋼廠進行大量與連續性生產具抗菌功能之雙相不銹鋼產品。至於當雙相不銹鋼鋼水熔煉13完成後，係經由精密脫腊鑄造2的方式，完成產品之製造。且該產品係採用雙相不銹鋼11添加銀14之合金不銹鋼，而有抗菌之功效。Secondly, please still refer to the first figure, the smelting method of the duplex stainless steel of the present invention is different from the general vacuum smelting manufacturing method, and the atmospheric smelting is used, so that large-scale and continuous production of large steel mills can be provided in the future. Duplex stainless steel with antibacterial function. As for the completion of the duplex stainless steel molten steel 13 after completion, the manufacture of the product is completed by means of precision dewaxing casting 2. And the product is made of duplex stainless steel 11 to add silver 14 alloy stainless steel, and has antibacterial effect.
至於該精密脫腊鑄造流程，請繼續參閱第二圖所示，先依欲製造之產品設計金屬模21，然後製造金屬模22，接著進行射腊23，其係將腊射入金屬模中(鋁模)，此時腊係為液狀，待冷卻凝固後成形。將成形後之腊的毛邊修整即為修腊24動作，完成後進行組樹25，其係將腊模組接形成澆口系統後，即可進行沾漿26，其係將腊模沾一層漿(馬來漿)後再沾一層砂(馬來砂)，重覆數次後即形成殼模27。而已乾燥完成之殼模27必需進行脫腊28動作，完成後再進行殼模燒結29，接著即進行澆鑄30動作，冷卻後即可將鑄物成形，此時則藉由外力完成脫殼31，然後將成品與澆口系統分離(即切澆口32)，因切澆口32時會產生毛邊，所以需再行整修33將其去除，最後進行品管檢查34後即為成品35。As for the precision dewaxing casting process, please continue to refer to the second figure, first designing the metal mold 21 according to the product to be manufactured, and then manufacturing the metal mold 22, followed by the spray 23, which is used to inject the wax into the metal mold ( Aluminum mold), at this time, the wax is liquid, and is formed after cooling and solidification. After trimming the burrs of the formed wax, it is the action of repairing the wax 24, and after completion, the group tree 25 is formed, and after the wax module is connected to form the gate system, the slurry 26 can be carried out, and the wax mold is immersed in a slurry. After the (Malay slurry), a layer of sand (Malay sand) is applied, and after several times, the shell mold 27 is formed. The shell mold 27 which has been dried must be subjected to the dewaxing 28 operation, and then the shell mold is sintered 29, and then the casting 30 is performed. After cooling, the casting can be formed, and at this time, the shelling 31 is completed by an external force. The finished product is then separated from the gate system (i.e., the gate 32). When the gate 32 is cut, burrs are generated, so that it needs to be refurbished 33 to remove it, and finally the quality inspection 34 is the finished product 35.
接著，有關精密脫腊製程，茲再詳細說明如下，該金屬模完成後(配合成品造型開設)，將腊射入金屬模中凝固成形，而該腊液溫度在攝氏53℃左右。當腊模進行沾漿動作時，除了先沾一層漿後再沾一層砂，且必需放置4～5小時乾燥，然後重覆5～6次，以達到一定之厚度，待全部乾燥完成後即形成殼模27，當進行脫腊28時，請參閱第三圖所示，藉由一蒸氣箱4設備，將殼模27置於台車40上推入蒸氣箱4內，再利用蒸氣將腊溶化，使殼模27形成中空狀。Next, the precise dewaxing process will be described in detail below. After the metal mold is completed (in conjunction with the finished product design), the wax is injected into the metal mold to be solidified, and the temperature of the wax is about 53 ° C. When the wax mold is smeared, in addition to a layer of slurry, a layer of sand is applied, and it must be placed for 4 to 5 hours to dry, and then repeated 5 to 6 times to reach a certain thickness, which is formed after all the drying is completed. The shell mold 27, when performing the dewaxing 28, as shown in the third figure, the shell mold 27 is placed on the trolley 40 and pushed into the steam box 4 by means of a steam box 4 device, and the wax is dissolved by steam. The shell mold 27 is formed into a hollow shape.
至於，脫腊28後之殼模27，仍會有殘留之腊或水份在殼模27內，所以必須將其完全去除，請配合參閱第四圖所示，將殼模27置入於燒爐5中，該燒爐5內之燒結溫度需保持在攝氏1050℃～1100℃，且至少要燒結1小時以上，才能將殘留的腊及水份完全燒掉去除。As for the shell mold 27 after dewaxing 28, there will still be residual wax or water in the shell mold 27, so it must be completely removed. Please refer to the fourth figure to put the shell mold 27 into the burning. In the furnace 5, the sintering temperature in the furnace 5 is maintained at 1050 ° C to 1100 ° C, and at least one hour or more of sintering is required to completely remove the residual wax and water.
當完成燒結之殼模27即可進行澆鑄30作業，而該進行澆鑄30的鋼液，並非習用300系列或400系列之不銹鋼基材，而係採用雙相不銹鋼，且為達抗菌目的，係添加有銀之不銹鋼合金設計。所以選定肥粒鐵加沃斯田鐵系2205雙相不銹鋼，其係採用大氣熔煉的製造方式，並在熔煉過程中施以液態氬氣保護，可防止金屬表面反應現象。至於在熔煉過程中，何時加入銀佔有極重要因素。因本發明係採用高週波爐，藉由高週波熔煉時之攪拌作用，會使銀浮於鋼水之表面造成部份不均勻，所以為防止此一現象，係在2205雙相不銹鋼熔煉至一半時，必需將高週波爐之電源關閉，並馬上將銀加入鋼水中。且為幫助銀的分布均勻性，係再加入有稀土元素，而該稀土元素之添加方式，係在鋼水即將出爐之前添加至鋼水中再出爐進行澆鑄。When the sintered shell mold 27 is completed, the casting 30 operation can be performed, and the molten steel for casting 30 is not a conventional 300 series or 400 series stainless steel substrate, but is made of duplex stainless steel, and is added for antibacterial purposes. Silver stainless steel alloy design. Therefore, the ferrite iron Wavos field iron 2205 duplex stainless steel was selected, which was manufactured by atmospheric smelting, and was protected by liquid argon during the smelting process to prevent metal surface reaction. As for the silver occupies, it is a very important factor in the smelting process. Because the invention adopts a high-frequency furnace, the stirring of the high-frequency smelting causes the silver to float on the surface of the molten steel to cause partial unevenness. Therefore, in order to prevent this phenomenon, the 2205 duplex stainless steel is smelted to half. At this time, it is necessary to turn off the power of the high-frequency furnace and immediately add silver to the molten steel. In order to help the distribution uniformity of silver, a rare earth element is added, and the rare earth element is added to the molten steel before the molten steel is released, and then cast and cast.
另外，本發明利用雙相不銹鋼加入銀及稀土元素之抗菌不銹鋼合金，經抗菌不銹鋼抗菌性測試效果極佳。實驗係使用薄膜密著法(JIS Z 2801)以5×5cm之試片表面敷上0.4ml之菌液在培養皿中進行測試，如第五圖所示，該培養皿6內部放置該實驗試片60，但於試片60底端設有一襯墊薄膜61，而試片60表面敷上試驗之菌液62再於頂端面覆蓋一層PE薄膜63進行測試。而抗菌率之計算公式為(開始生菌數-24小時後生菌數)/開始時生菌數×100%。In addition, the invention utilizes the antibacterial stainless steel alloy of silver and rare earth elements by using duplex stainless steel, and the antibacterial property test result of the antibacterial stainless steel is excellent. In the experiment, the surface of the test piece of 5×5 cm was coated with 0.4 ml of the bacterial liquid using a film adhesion method (JIS Z 2801), and the test was carried out in the culture dish as shown in the fifth figure. The sheet 60 is provided with a liner film 61 at the bottom end of the test piece 60, and the surface of the test piece 60 is coated with the test bacterial liquid 62 and then covered with a PE film 63 at the top end surface for testing. The formula for calculating the antibacterial rate is (the number of bacteria after the start of the number of bacteria - 24 hours) / the number of bacteria at the beginning × 100%.
依照實驗結果該試片分別為原不銹鋼基材及雙相不銹鋼添加銀之合金基材，當原基材敷上大腸桿菌之菌液62(如第六圖所示)，該基材原始敷上之菌數為4×105 (CFU/ml)，經過24小時培養後之菌數為5.2×105 ，毫無抗菌之效果。但加入有銀之雙相不銹鋼基材，剛敷上之相同4×105 菌數，經過24小時後，殘留之菌數僅有數佰至數仟之間(配合參閱第七圖所示)，抗菌效果極佳，且依照添加銀之含量，當超過0.2%以上時，抗菌率已達到99%以上。而當用於測試黃金葡萄球菌之抗菌結果(配合參閱第八、九圖所示)，其結果仍然與大腸桿菌一樣，原基材敷上4×105 之原始菌數，經過24小時培養後之菌數為6.8×106 ，同樣不具減菌之效果。然當使用雙相不銹鋼添加銀之合金基材時，經過24小時培養後之菌數大概只剩數仟，減菌率幾達99%以上。According to the experimental results, the test piece is a silver alloy substrate added to the original stainless steel substrate and the duplex stainless steel, and the original substrate is coated with the Escherichia coli liquid 62 (as shown in the sixth figure), and the substrate is originally applied. The number of bacteria was 4 × 10 5 (CFU/ml), and the number of bacteria after 24 hours of culture was 5.2 × 10 5 , which had no antibacterial effect. However, the addition of the duplex stainless steel substrate with silver, just the same 4 × 10 5 bacteria number, after 24 hours, the residual number of bacteria is only between several 佰 to several ( (see the seventh figure). The antibacterial effect is excellent, and according to the content of added silver, when it exceeds 0.2%, the antibacterial rate has reached 99% or more. When used to test the antibacterial results of Staphylococcus aureus (as shown in Figures 8 and 9), the results are still the same as E. coli, the original substrate is coated with 4 × 10 5 original bacteria, after 24 hours of cultivation The number of bacteria is 6.8×10 6 , which also has no effect of reducing bacteria. However, when a silver alloy substrate is added using duplex stainless steel, the number of bacteria after 24 hours of cultivation is only about a few, and the reduction rate is as much as 99% or more.
由於本發明係為雙相合金鋼之設計，抗菌及抗蝕性之效果極佳，而不同於傳統抗菌不銹鋼之製造方法，因此非常適宜使用在炊具食品加工機械、餐鍋、衛浴設備及醫療器材等，或飲用水管道及淨水系統等，並能利用現成技術開發肥粒鐵系及麻田散鐵系抗菌不銹鋼等刀具產品。且本發明綜合了材料設計、鑄造製程技術與熱處理，與傳統鑄造製程相比，技術層面較高，且產品具有獨特之性質，係為高附加價值之鑄件。Since the invention is a dual-phase alloy steel design, the antibacterial and anti-corrosive effects are excellent, and unlike the traditional antibacterial stainless steel manufacturing method, it is very suitable for use in cookware food processing machinery, meal pots, sanitary equipment and medical equipment. Etc., or drinking water pipes and water purification systems, etc., and can use the off-the-shelf technology to develop tool products such as ferrite iron and Ma Tian scattered iron antibacterial stainless steel. The invention combines material design, casting process technology and heat treatment, and has higher technical level than the traditional casting process, and the product has unique properties, and is a high value-added casting.
綜上所述，本發明藉由雙相不銹鋼以大氣熔煉方式，並添加銀及稀土元素，使其達到抗菌及抗腐蝕之功效，再配合精密脫腊鑄造技術，使產品達到抗菌及抗蝕之目的，不僅較傳統不銹鋼製品為優，且並未發現有相同之產品核准專利在先，當已符合專利之要件，爰依法提出專利申請。In summary, the present invention achieves antibacterial and anti-corrosion effects by means of atmospheric melting of duplex stainless steel, and adding silver and rare earth elements, and is combined with precision dewaxing casting technology to achieve antibacterial and anti-corrosion products. The purpose is not only superior to traditional stainless steel products, but also does not find the same product approval patent first, when it has met the requirements of the patent, and filed a patent application according to law.
11．．．基材11. . . Substrate
13．．．熔煉13. . . Melting
12．．．氬氣12. . . Argon
14．．．銀14. . . silver
16．．．出爐16. . . Baked
15．．．稀土元素15. . . Rare earth element
21．．．設計金屬模twenty one. . . Design metal mold
2．．．精密脫腊鑄造2. . . Precision dewaxing casting
22．．．製造金屬模twenty two. . . Manufacturing metal mold
23．．．射腊twenty three. . . Spraying
24．．．修腊twenty four. . . Repairing wax
25．．．組樹25. . . Group tree
26．．．沾漿26. . . Dip
27．．．殼模27. . . Shell mold
28．．．脫腊28. . . Dewax
29．．．殼模燒結29. . . Shell mold sintering
30．．．澆鑄30. . . casting
31．．．脫殼31. . . Shelling
32．．．切澆口32. . . Cut gate
33．．．整修33. . . Renovation
34．．．品管檢查34. . . Quality control inspection
35．．．成品35. . . Finished product
4．．．蒸氣箱4. . . Steam box
40．．．台車40. . . Trolley
5．．．燒爐5. . . Burner
6．．．培養皿6. . . Petri dish
60．．．試片60. . . Audition
61．．．襯墊薄膜61. . . Liner film
62．．．菌液62. . . Bacterial fluid
63．．．PE薄膜63. . . PE film
第一圖係本發明抗菌不銹鋼熔煉之流程圖。The first figure is a flow chart of the antibacterial stainless steel smelting of the present invention.
第二圖係本發明精密脫腊鑄造流程圖。The second drawing is a flow chart of the precision dewaxing casting of the present invention.
第三圖係本發明殼模脫腊之示意圖。The third figure is a schematic view of the shell mold dewaxing of the present invention.
第四圖係本發明殼模燒結時之示意圖。The fourth figure is a schematic view of the shell mold of the present invention when sintered.
第五圖係本發明使用薄膜密著法之抗菌試驗示意圖。The fifth drawing is a schematic diagram of the antibacterial test using the film adhesion method of the present invention.
第六圖係原不銹鋼基材敷上大腸桿菌之抗菌結果圖。The sixth picture shows the antibacterial results of the original stainless steel substrate coated with E. coli.
第七圖係雙相不銹鋼合金基材敷上大腸桿菌之抗菌結果圖。The seventh picture shows the antibacterial results of E. coli coated on a duplex stainless steel alloy substrate.
第八圖係原不銹鋼基材敷上黃金葡萄球菌之抗菌結果圖。The eighth picture shows the antibacterial results of the original stainless steel substrate coated with Staphylococcus aureus.
第九圖係雙相不銹鋼合金基材敷上黃金葡萄球菌之抗菌結果圖。The ninth figure is an antibacterial result of the application of Staphylococcus aureus on a duplex stainless steel alloy substrate.
11．．．基材11. . . Substrate
12．．．氬氣12. . . Argon
13．．．熔煉13. . . Melting
14．．．銀14. . . silver
15．．．稀土元素15. . . Rare earth element
16．．．出爐16. . . Baked
2．．．精密脫腊鑄造2. . . Precision dewaxing casting
Claims (5)
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| TW98120239A TWI399440B (en) | 2009-06-17 | 2009-06-17 | Method of Casting Casting of Refined Stainless Steel |
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| TWI399440B true TWI399440B (en) | 2013-06-21 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW444060B (en) * | 1998-06-05 | 2001-07-01 | Kawasaki Steel Co | Stainless steel product having excellent antimicrobial activity and method for production thereof |
| TW459057B (en) * | 1998-03-16 | 2001-10-11 | Kawasaki Steel Co | Stainless steel having excellent antibacterial property and method for producing the same |
| TW491897B (en) * | 1999-04-27 | 2002-06-21 | Chung Cheng Faucet Co Ltd | Production method most suit to the parts of faucets by leadless copper |
| CN101280395A (en) * | 2007-04-04 | 2008-10-08 | 江苏星火特钢有限公司 | High-manganses low-nickel nanometer precipitated phase austenite antibacterial stainless steel |
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2009
- 2009-06-17 TW TW98120239A patent/TWI399440B/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW459057B (en) * | 1998-03-16 | 2001-10-11 | Kawasaki Steel Co | Stainless steel having excellent antibacterial property and method for producing the same |
| TW444060B (en) * | 1998-06-05 | 2001-07-01 | Kawasaki Steel Co | Stainless steel product having excellent antimicrobial activity and method for production thereof |
| TW491897B (en) * | 1999-04-27 | 2002-06-21 | Chung Cheng Faucet Co Ltd | Production method most suit to the parts of faucets by leadless copper |
| CN101280395A (en) * | 2007-04-04 | 2008-10-08 | 江苏星火特钢有限公司 | High-manganses low-nickel nanometer precipitated phase austenite antibacterial stainless steel |
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