TWI395836B - Metal knife with a ceramic surface and manufacturing method thereof - Google Patents

Metal knife with a ceramic surface and manufacturing method thereof Download PDF

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TWI395836B
TWI395836B TW98145820A TW98145820A TWI395836B TW I395836 B TWI395836 B TW I395836B TW 98145820 A TW98145820 A TW 98145820A TW 98145820 A TW98145820 A TW 98145820A TW I395836 B TWI395836 B TW I395836B
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metal
ceramic surface
tool
ceramic
layer
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TW98145820A
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TW201122157A (en
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Chun Hsien Chiang
Chin Chuan Huang
Chien Chsin Huang
Chih Chen Hsiao
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Metal Ind Res & Dev Ct
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具陶瓷表面之金屬刀具及其製作方法Metal cutter with ceramic surface and manufacturing method thereof

本發明係關於一種金屬刀具及其製備方法,特別是一種具陶瓷表面之金屬刀具及其製備方法。The invention relates to a metal cutter and a preparation method thereof, in particular to a metal cutter with a ceramic surface and a preparation method thereof.

目前一般市面上常見之刀具通常分為單層金屬刀具、複合金屬刀具及陶瓷刀具等種類。At present, the tools commonly used in the market are generally classified into single-layer metal cutters, composite metal cutters, and ceramic cutters.

以習用單層金屬刀具而言,其係為目前市售廚用刀具市場中最普遍使用之刀具。習用單層刀具係先將一金屬板料以沖壓等方式對該金屬板料進行加工,以成形為一刀胚,再經由熱處理,使該刀胚硬化後,再經表面拋光及表面清洗,最後將該刀胚結合一手柄,並將該刀胚進行研磨開鋒後,便完成該習用單層金屬刀具之製作。In the case of conventional single-layer metal tools, it is the most commonly used tool in the market for commercially available kitchen tools. The conventional single-layer tool firstly processes a metal sheet by stamping or the like to form a blank, and then heat-treats the hardened, then surface-polished and surface-cleaned, and finally After the knives are combined with a handle and the knives are ground and polished, the conventional single-layer metal cutter is completed.

然而,上述習用單層金屬刀具之特性取決於該單一金屬板料之材質特性,例如,若以SUS304作為該金屬板料,則其耐蝕性較佳,但硬度不佳;若以SUS420作為該金屬板料,則硬度及韌性較佳,但耐蝕性較差。因此,造成習用單層金屬刀具無法同時兼具高硬度、高韌性及高耐蝕性等特性。However, the characteristics of the above-mentioned conventional single-layer metal cutter depend on the material properties of the single metal sheet. For example, if SUS304 is used as the metal sheet, the corrosion resistance is better, but the hardness is not good; if SUS420 is used as the metal For sheet materials, hardness and toughness are better, but corrosion resistance is poor. Therefore, the conventional single-layer metal cutter cannot simultaneously have the characteristics of high hardness, high toughness, and high corrosion resistance.

以習用複合金屬刀具而言,例如中華民國公告第407077號發明專利「刀劍專用多層摺疊花紋鋼及其製造方法」所述,其主要係以將硬鋼及半硬鋼進行加熱,使硬鋼及半硬鋼軟化,並分別鍛製成平板狀;再將硬鋼與半硬鋼加溫至達到可融合狀態,並鍛製使硬鋼與半硬鋼結合為一體;再將結合為一體的硬鋼與半硬鋼予以加溫、摺疊、扭轉及鍛製;再將彈簧鋼夾入於摺疊之硬鋼與半硬鋼內,而後加溫並鍛製使彈簧鋼與硬鋼、半硬鋼結合為一體;最後經研磨、熱處理及草酸浸蝕,使花紋呈現出來,最後經研磨開鋒。便可獲得習用複合金屬刀具。For the use of composite metal knives, for example, the invention patent of the Republic of China Bulletin No. 407077 "Multi-layer folded pattern steel for swords and its manufacturing method" is mainly for heating hard steel and semi-hard steel to make hard steel and The semi-hard steel is softened and forged into a flat shape; the hard steel and the semi-hard steel are heated to a fused state, and the forged steel is combined with the semi-hard steel; the hard is combined into one. Steel and semi-hard steel are heated, folded, twisted and forged; spring steel is then clamped into folded hard steel and semi-hard steel, and then heated and forged to combine spring steel with hard steel and semi-hard steel. Integral; finally, after grinding, heat treatment and oxalic acid etching, the pattern is presented, and finally the grinding is carried out. A custom composite metal tool is available.

通常習用複合金屬刀具係包含一芯層及數外層,該芯層主要係以高韌性及高強度之鋼材為主,以提升多層金屬刀具之整體強度;該外層主要係以耐蝕性鋼材為主,以提升該習用複合金屬刀具之耐蝕性。Generally, the conventional composite metal tool comprises a core layer and a plurality of outer layers, and the core layer is mainly made of high toughness and high strength steel to improve the overall strength of the multilayer metal cutter; the outer layer is mainly made of corrosion resistant steel. To improve the corrosion resistance of the conventional composite metal tool.

然而,因金屬刀具表面會釋放金屬離子,故於切割食材時,時常會在食材表面殘留金屬味道,且於切割食材後所釋放之金屬離子亦會加速新鮮食材表面之氧化,降低食材之保存時間。再且,由於該複合金屬刀具仍屬金屬材質製成,該耐蝕性之提升仍稍嫌不足。However, due to the release of metal ions on the surface of the metal cutter, when the food is cut, the metal taste is often left on the surface of the food, and the metal ions released after cutting the food also accelerate the oxidation of the surface of the fresh food, reducing the preservation time of the food. . Moreover, since the composite metal tool is still made of a metal material, the improvement in corrosion resistance is still insufficient.

以陶瓷刀具而言,習用陶瓷刀具之製作係先以射出成形(injection)或模造成形(molding)等方式形成一陶瓷刀具生胚,再透過對該陶瓷刀具生胚進行高溫燒結,以形成陶瓷刀具。如美國公告第6151786號專利係採用射出成形方式製作陶瓷刀具,其特點為刀身強度高,且可於射出成形過程中直接形成刀刃及刀身輪廓,但缺點是無法形成較薄之刀身。而美國公告第5121600號專利則以燒結後進行機械加工方式來製作薄形刀具,缺點是加工成本高,且刀身會造成應力集中,容易破裂。In the case of ceramic knives, conventional ceramic knives are first formed by injection molding or molding to form a ceramic tool green body, and then through high temperature sintering of the ceramic tool green body to form a ceramic tool. . For example, U.S. Patent No. 6,151,786 uses a injection molding method to produce a ceramic cutter, which is characterized by high blade strength and can directly form a blade edge and a blade contour during the injection molding process, but has the disadvantage that a thin blade cannot be formed. The U.S. Patent No. 5121600 discloses a thin tool by mechanical processing after sintering. The disadvantage is that the processing cost is high, and the blade body causes stress concentration and is easily broken.

前述習用陶瓷刀具由於係為陶瓷材質製成,因此具有高硬度及高耐蝕性之特點,且其不會產生金屬離子,因此可改善習用金屬刀具容易於食材表面殘留異味以及加速食材氧化之缺點。然而,陶瓷材料本身為硬脆材質,韌性相對較低,因此若使用不慎容易因撞擊而使該習用陶瓷刀具產生缺角;又由於硬度較高,因此若產生磨損,一般使用者亦無法以磨刀石自行進行研磨回復刀刃鋒利度;再且,其製作成本亦較高。Since the conventional ceramic cutter is made of a ceramic material, it has the characteristics of high hardness and high corrosion resistance, and it does not generate metal ions, thereby improving the disadvantages of the conventional metal cutter which is easy to leave odor on the surface of the food and accelerate the oxidation of the food. However, the ceramic material itself is a hard and brittle material, and the toughness is relatively low. Therefore, if the use is inadvertently caused by the impact, the conventional ceramic tool has a corner defect; and because of the high hardness, if the wear is caused, the average user cannot The sharpening stone grinds itself to restore the sharpness of the blade; furthermore, the manufacturing cost is also higher.

基於上述原因,其有必要進一步改良上述各種習用刀具及其製作方法。For the above reasons, it is necessary to further improve the above various conventional cutters and their manufacturing methods.

本發明目的乃改良上述缺點,以提供一種具陶瓷表面及金屬芯層之複合刀具,以便刀具同時具有金屬材質之高硬度及高韌性,以及陶瓷刀具之高耐蝕性,為其發明目的。SUMMARY OF THE INVENTION The object of the present invention is to improve the above disadvantages to provide a composite tool having a ceramic surface and a metal core layer, so that the tool has both high hardness and high toughness of the metal material and high corrosion resistance of the ceramic tool, which is an object of the invention.

本發明次一目的係提供一種具陶瓷表面之金屬刀具,以避免金屬刀具中的金屬材質釋放金屬離子至食材中。A second object of the present invention is to provide a metal tool having a ceramic surface to prevent metal materials in the metal tool from releasing metal ions into the food material.

本發明再一目的係提供一種具陶瓷表面之金屬刀具,使用者可自行研磨刀具之刀刃。Still another object of the present invention is to provide a metal tool having a ceramic surface on which a user can grind the blade of the tool.

本發明又一目的係提供一種具陶瓷表面之金屬刀具,以使該金屬刀具之陶瓷表面於照光時可產生殺菌效果。Another object of the present invention is to provide a metal cutter having a ceramic surface such that the ceramic surface of the metal cutter can produce a sterilizing effect upon illumination.

本發明又一目的係提供一種具陶瓷表面之金屬刀具之製作方法,以製作出前述之具陶瓷表面之金屬刀具。Another object of the present invention is to provide a method of manufacturing a metal tool having a ceramic surface to produce the aforementioned metal tool having a ceramic surface.

根據本發明的具陶瓷表面之金屬刀具係包含:一金屬芯層及一陶瓷表層,該金屬芯層具有一刀身部及一刃部;該陶瓷表層覆蓋設置於該刀身部之表面。A metal tool having a ceramic surface according to the present invention comprises: a metal core layer and a ceramic surface layer, the metal core layer having a blade portion and a blade portion; the ceramic skin layer covering the surface of the blade portion.

根據本發明的具陶瓷表面之金屬刀具係包含:金屬芯層、金屬覆面層及陶瓷表層,該金屬芯層具有一刀身部及一刃部;該金屬覆面層設置於該刀身部之表面,且該金屬覆面層與該金屬芯層係以不同之金屬材料製成;該陶瓷表層形成於該金屬覆面層之表面。The metal tool having a ceramic surface according to the present invention comprises: a metal core layer, a metal cladding layer, and a ceramic surface layer, the metal core layer having a blade portion and a blade portion; the metal cladding layer is disposed on a surface of the blade portion, and The metal cladding layer and the metal core layer are made of different metal materials; the ceramic surface layer is formed on the surface of the metal cladding layer.

根據本發明的具陶瓷表面之金屬刀具之製作方法,係包含:一成形步驟以一成形加工方式對一金屬基材加工,以獲得一金屬刀胚;一硬化步驟對該金屬刀胚進行硬化熱處理;一陶瓷化步驟以一表面陶瓷化技術對該金屬刀胚之表面進行陶瓷化處理,使該金屬刀胚之表面形成陶瓷表層;及一刀刃開鋒步驟對該金屬刀胚之一端緣進行研磨開鋒。A method for manufacturing a metal tool having a ceramic surface according to the present invention comprises: a forming step of processing a metal substrate in a forming process to obtain a metal blank; and a hardening step to harden the metal blank a ceramization step of tempering the surface of the metal blank by a surface ceramming technique to form a ceramic surface on the surface of the metal blank; and a blade edge opening step to polish one end edge of the metal blank Open the front.

為讓本發明之上述及其他目的、特徵及優點能更明顯易懂,下文特舉本發明之較佳實施例,並配合所附圖式,作詳細說明如下:The above and other objects, features and advantages of the present invention will become more <RTIgt;

本發明第一實施例:The first embodiment of the invention:

請參照第1圖所示,本發明第一實施例之具陶瓷表面之金屬刀具之製作方法係包含一成形步驟S11、一硬化步驟S12、一陶瓷化步驟S13及一刀刃開鋒步驟S14。Referring to FIG. 1, a method for manufacturing a metal tool having a ceramic surface according to a first embodiment of the present invention includes a forming step S11, a hardening step S12, a ceramizing step S13, and a blade opening step S14.

請參照第2圖所示,本第一實施例之成形步驟S11係以一成形加工方式對一金屬基材1加工,以獲得一具有刀具外形之金屬芯層2作為金屬刀胚。更詳言之,本第一實施例之金屬基材1係可選擇為以鋼或鈦等金屬材質製成之單層金屬基材或多層結構之複合金屬基材,其中本實施例係選擇為單層金屬基材,且係以SUS420之鋼材製成。此步驟係可選擇以雷射切割、鍛造或沖壓等成形加工方式對該金屬基材1進行加工,本實施例係選擇以一沖模3對該金屬基材1進行沖壓加工,以加工出具有刀具形狀之金屬芯層2作為金屬刀胚,如第3圖所示,該金屬芯層2具有二側表面21、22。Referring to FIG. 2, the forming step S11 of the first embodiment processes a metal substrate 1 in a forming process to obtain a metal core layer 2 having a tool shape as a metal blank. In more detail, the metal substrate 1 of the first embodiment can be selected as a single-layer metal substrate or a multi-layer composite metal substrate made of a metal material such as steel or titanium, and the embodiment is selected as A single-layer metal substrate made of SUS420 steel. In this step, the metal substrate 1 can be processed by a forming process such as laser cutting, forging or stamping. In this embodiment, the metal substrate 1 is selected by a die 3 to be processed into a tool. The shape of the metal core layer 2 serves as a metal blank, and as shown in Fig. 3, the metal core layer 2 has two side surfaces 21, 22.

請參照第4圖所示,本第一實施例之硬化步驟S12係對該金屬芯層2進行硬化熱處理。更詳言之,本步驟之硬化熱處理係將該金屬芯層2加熱至700~1100℃之溫度後進行持溫,本實施例係選擇加熱至900℃並持溫10分鐘,以透過該硬化熱處理提升該金屬芯層2之整體強度及硬度。Referring to FIG. 4, the hardening step S12 of the first embodiment is a hardening heat treatment of the metal core layer 2. More specifically, in the hardening heat treatment of this step, the metal core layer 2 is heated to a temperature of 700 to 1100 ° C and then maintained at a temperature. In this embodiment, the temperature is selected to be heated to 900 ° C and held for 10 minutes to pass the hardening heat treatment. The overall strength and hardness of the metal core layer 2 are improved.

請參照第5至7圖所示,本第一實施例之陶瓷化步驟S13係以一表面陶瓷化技術對該金屬芯層2之表面進行陶瓷化處理,使該金屬芯層2之表面形成陶瓷表層4。更詳言之,該表面陶瓷化技術係可選擇為微弧氧化(Micro Arc Oxidation,MAO)或噴塗等方式進行,本第一實施例係選擇以噴塗方式對該金屬芯層2之表面進行陶瓷化處理。Referring to Figures 5 to 7, the ceramization step S13 of the first embodiment ceramizes the surface of the metal core layer 2 by a surface ceramization technique to form a ceramic surface on the surface of the metal core layer 2. Surface layer 4. In more detail, the surface ceramization technology can be selected by means of Micro Arc Oxidation (MAO) or spraying. In the first embodiment, the surface of the metal core layer 2 is selected by spraying. Processing.

請參照第5圖所示,該噴塗方式係先將一陶瓷粉末噴塗於該金屬芯層2之二側表面21、22,以形成陶瓷表層4。其中該陶瓷粉末係可選擇為二氧化鈦粉末、氧化鋯粉末或氧化鋁粉末等材質,本實施例係選擇以二氧化鈦粉末材料作為該陶瓷粉末進行噴塗。進行陶瓷粉末噴塗作業時,以1000~2000℃之溫度將陶瓷粉末加熱並對該金屬芯層2進行噴塗而附著,以使該陶瓷粉末形成如第6圖所示之陶瓷表層4。本實施例以二氧化鈦粉末噴塗於該金屬芯層2時,噴塗溫度為1800℃。至此便完成該陶瓷化步驟S13。Referring to FIG. 5, the spraying method first sprays a ceramic powder on the two side surfaces 21, 22 of the metal core layer 2 to form a ceramic skin layer 4. The ceramic powder may be selected from the group consisting of titanium dioxide powder, zirconia powder or alumina powder. In this embodiment, a titanium dioxide powder material is selected as the ceramic powder for spraying. When the ceramic powder coating operation is performed, the ceramic powder is heated at a temperature of 1000 to 2000 ° C and the metal core layer 2 is sprayed and adhered so that the ceramic powder forms the ceramic skin layer 4 as shown in Fig. 6. In this embodiment, when the titanium dioxide powder was sprayed on the metal core layer 2, the spraying temperature was 1800 °C. This ceramization step S13 is thus completed.

請參照第6圖所示,本第一實施例之刀刃開鋒步驟S14係對該覆蓋有陶瓷表層4之金屬芯層2的一端緣進行研磨開鋒。更詳言之,對該金屬芯層2之一端緣進行研磨後,便可使該金屬芯層2形成一刃部23。如此,便完成本發明第一實施例之具陶瓷表面之金屬刀具的製作方法。Referring to FIG. 6, the blade opening step S14 of the first embodiment is to polish the one end edge of the metal core layer 2 covered with the ceramic skin layer 4. More specifically, after the edge of one of the metal core layers 2 is polished, the metal core layer 2 can be formed into a blade portion 23. Thus, the method of manufacturing the metal tool having the ceramic surface according to the first embodiment of the present invention is completed.

請再參照第6圖所示,透過上述方法所製得之本發明第一實施例之具陶瓷表面之金屬刀具係包含一金屬芯層2及一陶瓷表層4。該金屬芯層2經刀刃開鋒後具有一刃部23及一刀身部24。該陶瓷表層4係覆蓋設置於該刀身部24之表面。該陶瓷表層4較佳係以光觸媒之陶瓷材料製成,例如以二氧化鈦製成,經紫外光照射後,可產生殺菌效果,避免細菌滋生於該陶瓷表層4之表面。Referring to FIG. 6, the metal tool having the ceramic surface according to the first embodiment of the present invention obtained by the above method comprises a metal core layer 2 and a ceramic surface layer 4. The metal core layer 2 has a blade portion 23 and a blade portion 24 after being bladed. The ceramic skin layer 4 covers the surface of the blade body portion 24. The ceramic skin layer 4 is preferably made of a ceramic material of a photocatalyst, for example, made of titanium dioxide. After being irradiated with ultraviolet light, a bactericidal effect can be produced to prevent bacteria from growing on the surface of the ceramic surface layer 4.

如此,由於該金屬芯層2係以金屬材質製成,因此可使本發明之具陶瓷表面之金屬刀具保有高硬度及高韌性,而不會如習用陶瓷刀具容易因不慎撞擊而產生碎裂之缺點。再且,由於該刃部23亦為金屬材質,因此一般使用者於該刃部23鋒利度不足時,亦可自行使用磨刀石進行研磨,而不會如習用陶瓷刀因硬度過高而造成使用者無法自行研磨,後續維護不便之缺點。Thus, since the metal core layer 2 is made of a metal material, the metal tool having the ceramic surface of the present invention can maintain high hardness and high toughness without being easily broken by accidental impact as in the case of conventional ceramic tools. The shortcomings. Moreover, since the blade portion 23 is also made of a metal material, when the blade portion 23 has insufficient sharpness, the user can use the whetstone to grind it by himself, instead of the ceramic knives being too high in hardness. The user cannot grind by himself, and the disadvantages of subsequent maintenance are inconvenient.

此外,由於該金屬芯層2之刀身部24的表面覆蓋有該陶瓷表層4,除了可以提高本發明具陶瓷表面之金屬刀具的硬度及耐蝕性之外,於切割食材時,亦可避免該金屬芯層2之刀身部24表面釋放出金屬離子,而造成食材殘留異味,以及加速新鮮食材表面之氧化之缺點。In addition, since the surface of the blade portion 24 of the metal core layer 2 is covered with the ceramic skin layer 4, in addition to improving the hardness and corrosion resistance of the metal tool having the ceramic surface of the present invention, the metal can be avoided when cutting the food material. The surface of the blade portion 24 of the core layer 2 releases metal ions, which causes residual odor of the food material and the disadvantage of accelerating the oxidation of the surface of the fresh food material.

本發明第二實施例:A second embodiment of the invention:

請參照第7圖所示,本發明第二實施例之具陶瓷表面之金屬刀具之製作方法係包含一結合步驟S21、一熱處理步驟S22、一成形步驟S23、一硬化步驟S24、一陶瓷化步驟S25及一刀刃開鋒步驟S26。Referring to FIG. 7, a manufacturing method of a metal tool having a ceramic surface according to a second embodiment of the present invention includes a bonding step S21, a heat treatment step S22, a forming step S23, a hardening step S24, and a ceramization step. S25 and a blade open step S26.

請參照第8圖所示,本第二實施例之結合步驟S21係於係以一加工方式使一金屬芯層5結合於數層金屬覆面層6之間,以共同形成一複合金屬基材7。更詳言之,該金屬芯層5與該金屬覆面層6較佳係以不同金屬材質製成,以依需求適當搭配不同之金屬特性,例如,本第二實施例之金屬芯層5選擇以SUS420之鋼材製成,該金屬覆面層6係選擇以鈦金屬製成,當然該金屬芯層5及金屬覆面層6亦可依需求選擇以其他金屬材質製成,且較佳係先經清潔前處理後再進行結合,以避免該金屬芯層5及金屬覆面層6表面之雜質或氧化物影響結合強度。此步驟係可選擇以硬焊結合、軋延結合或爆炸焊接結合等加工方式使該金屬芯層5與金屬覆面層6相結合,本第二實施例係選擇以軋延結合之加工方式,於25~800℃(本實施例係選擇為500℃)之間將該金屬芯層5與二層金屬覆面層6相結合,材料變形量(厚度減縮率)為35%~60%,使得該金屬芯層5係位於該二金屬覆面層6之間,而共同形成該複合金屬基材7。Referring to FIG. 8, the bonding step S21 of the second embodiment is to bond a metal core layer 5 between the plurality of metal cladding layers 6 in a processing manner to jointly form a composite metal substrate 7. . More specifically, the metal core layer 5 and the metal cladding layer 6 are preferably made of different metal materials to appropriately match different metal characteristics according to requirements. For example, the metal core layer 5 of the second embodiment is selected. Made of SUS420 steel, the metal cladding layer 6 is made of titanium metal. Of course, the metal core layer 5 and the metal cladding layer 6 can also be made of other metal materials according to requirements, and preferably before being cleaned. After the treatment, bonding is performed to prevent the metal core layer 5 and the impurities or oxides on the surface of the metal coating layer 6 from affecting the bonding strength. In this step, the metal core layer 5 and the metal cladding layer 6 may be combined by a brazing joint, a rolling joint or an explosion welding joint, and the second embodiment is selected to be processed by rolling and joining. The metal core layer 5 and the two-layer metal cladding layer 6 are combined between 25 and 800 ° C (500 ° C in this embodiment), and the material deformation amount (thickness reduction ratio) is 35% to 60%, so that the metal The core layer 5 is located between the two metal cladding layers 6 to form the composite metal substrate 7 together.

請參照第9圖所示,本第二實施例之熱處理步驟S22係對該複合金屬基材7進行加熱。更詳言之,此步驟係將該複合金屬基材7加熱至700~1100℃之溫度後並持溫30~60分鐘,本實施例係選擇加熱至900℃之溫度後持溫40分鐘,以提升該金屬芯層5與該金屬覆面層6之間的結合強度,避免於後續製程中該金屬芯層5與金屬覆面層6脫離,且同時可提高該金屬芯層5之機械強度。其中,經熱處理後之複合金屬基材7的耐剝離強度較佳係於200N/cm以上。Referring to Fig. 9, the heat treatment step S22 of the second embodiment heats the composite metal substrate 7. More specifically, this step is to heat the composite metal substrate 7 to a temperature of 700 to 1100 ° C and maintain the temperature for 30 to 60 minutes. In this embodiment, the temperature is selected to be heated to 900 ° C and then held for 40 minutes. The bonding strength between the metal core layer 5 and the metal cladding layer 6 is improved to prevent the metal core layer 5 from being detached from the metal cladding layer 6 in a subsequent process, and at the same time, the mechanical strength of the metal core layer 5 can be improved. Among them, the peeling strength of the composite metal substrate 7 after the heat treatment is preferably 200 N/cm or more.

請參照第10圖所示,本第二實施例之成形步驟S23係以一成形加工方式對該複合金屬基材7加工,以獲得一金屬刀胚8。更詳言之,此步驟係可選擇以雷射切割、鍛造或沖壓等成形加工方式對該複合金屬基材7進行加工,本實施例係選擇以前述之沖模3對該複合金屬基材7進行沖壓加工,以加工出具有刀具形狀之金屬刀胚8,使得該金屬刀胚8相同具有該金屬芯層5與該金屬覆面層6。Referring to FIG. 10, the forming step S23 of the second embodiment processes the composite metal substrate 7 in a forming process to obtain a metal blank 8. More specifically, in this step, the composite metal substrate 7 can be processed by a forming process such as laser cutting, forging or stamping. In this embodiment, the composite metal substrate 7 is selected by the above-mentioned die 3. Pressing is performed to machine a metal blank 8 having a tool shape such that the metal blank 8 has the same metal core layer 5 and the metal coating layer 6.

請參照第11圖所示,本第二實施例之硬化步驟S24係對該金屬刀胚8進行硬化熱處理。更詳言之,本步驟之硬化熱處理係將該金屬刀胚8加熱至700~1100℃之溫度後持溫,本實施例係選擇加熱900℃後持溫10分鐘,以透過該硬化熱處理提升該金屬刀胚8之整體強度及硬度。Referring to FIG. 11, the hardening step S24 of the second embodiment is a hardening heat treatment of the metal blank 8. More specifically, the hardening heat treatment in this step is to heat the metal blank 8 to a temperature of 700 to 1100 ° C, and the temperature is maintained in the present embodiment by heating at 900 ° C for 10 minutes to enhance the hardening heat treatment. The overall strength and hardness of the metal blank 8.

請參照第12圖所示,本第二實施例之陶瓷化步驟S25係以一表面陶瓷化技術對該金屬刀胚8之表面進行陶瓷化處理,使該金屬刀胚8之表面形成陶瓷表層9。更詳言之,該表面陶瓷化技術係可選擇為微弧氧化(Micro Arc Oxidation,MAO)或噴塗等方式進行,本第二實施例係選擇以微弧氧化對該金屬刀胚8之表面進行陶瓷化處理。本實施例係先將該金屬刀胚8掛設於一陽極,並浸入一電解液中,該電解液係可選擇為磷酸鹽、矽酸鹽或鋁酸鹽電解液。接著,再於陽極上施以高電壓及電流,例如本實施例係選擇施予陽極250~270V之電壓,操作時間約在20~60分鐘。如此,由於高壓放電產生之高能量微電弧作用於該金屬刀胚8之金屬覆面層6的表面,並以瞬間熔融燒結的方式,以於該金屬覆面層6之表面形成一結構緻密的陶瓷表層9。例如,本實施例之金屬覆面層6係為鈦金屬層,該陶瓷表層9便為二氧化鈦層,且該陶瓷表層9之厚度係為5~10μm。該微弧氧化處理可使該陶瓷表層9之結構達較佳之均一性。其中,該電解液較佳係選擇為磷酸鹽電解液,以於該陶瓷表層9中形成含有鈦、磷及氧元素之非晶相,可進一步提升該陶瓷表層9之耐蝕性。再且,本實施例所形成之陶瓷表層9為二氧化鈦,二氧化鈦為一光觸媒,經紫外光照射後可產生殺菌作用,因此,可進一步避免該陶瓷表層9之表面滋生細菌。Referring to FIG. 12, the ceramization step S25 of the second embodiment ceramizes the surface of the metal blank 8 by a surface ceramization technique to form a ceramic surface layer on the surface of the metal blank 8. . More specifically, the surface ceramization technique can be selected by means of Micro Arc Oxidation (MAO) or spraying. In the second embodiment, the surface of the metal blank 8 is selected by micro-arc oxidation. Ceramic treatment. In this embodiment, the metal blank 8 is first mounted on an anode and immersed in an electrolyte, which may be selected from a phosphate, citrate or aluminate electrolyte. Then, a high voltage and a current are applied to the anode. For example, in this embodiment, the voltage of the anode is selected to be 250 to 270 V, and the operation time is about 20 to 60 minutes. Thus, a high-energy micro-arc generated by the high-voltage discharge acts on the surface of the metal cladding layer 6 of the metal blank 8 and forms a dense ceramic surface on the surface of the metal cladding layer 6 by instantaneous melt sintering. 9. For example, the metal cladding layer 6 of the present embodiment is a titanium metal layer, and the ceramic surface layer 9 is a titanium dioxide layer, and the ceramic surface layer 9 has a thickness of 5 to 10 μm. The micro-arc oxidation treatment can achieve better uniformity of the structure of the ceramic skin layer 9. Preferably, the electrolyte is selected as a phosphate electrolyte to form an amorphous phase containing titanium, phosphorus and oxygen in the ceramic surface layer 9, which further improves the corrosion resistance of the ceramic surface layer 9. Further, the ceramic surface layer 9 formed in the present embodiment is titanium dioxide, and the titanium dioxide is a photocatalyst, which can be sterilized by ultraviolet light irradiation. Therefore, the surface of the ceramic surface layer 9 can be further prevented from breeding bacteria.

請參照第13圖所示,本第二實施例之刀刃開鋒步驟S26係對該金屬刀胚8之一端緣進行研磨開鋒。更詳言之,對該金屬刀胚8之一端緣進行研磨後,便可使該金屬刀胚8之金屬芯層5形成一刃部51。至此,便完成本發明第二實施例之具陶瓷表面之金屬刀具的製作方法。Referring to FIG. 13, the blade edge opening step S26 of the second embodiment performs the grinding and opening of one end edge of the metal blank 8. More specifically, after the edge of one of the metal blanks 8 is polished, the metal core layer 5 of the metal blank 8 can be formed into a blade portion 51. Thus far, a method of manufacturing a metal tool having a ceramic surface according to a second embodiment of the present invention is completed.

請再參照第13圖所示,透過上述方法所製得之本發明第二實施例之具陶瓷表面之金屬刀具係包含金屬芯層5、金屬覆面層6及陶瓷表層9。Referring to FIG. 13, the metal tool having the ceramic surface according to the second embodiment of the present invention obtained by the above method comprises a metal core layer 5, a metal cladding layer 6, and a ceramic surface layer 9.

經刀刃開鋒後,該金屬芯層5具有一刃部51、一刀身部52及二側表面53、54。該金屬覆面層6係結合設置於該刀身部52之表面,且與該金屬芯層5之材料不同,舉例而言,本第二實施例之金屬覆面層6便是設置於該二側表面53、54。該陶瓷表層9形成設置於該金屬覆面層6之表面。After the blade is opened, the metal core layer 5 has a blade portion 51, a blade portion 52 and two side surfaces 53, 54. The metal cladding layer 6 is disposed on the surface of the blade portion 52 and is different from the material of the metal core layer 5. For example, the metal cladding layer 6 of the second embodiment is disposed on the two side surfaces 53. 54, 54. The ceramic skin layer 9 is formed on the surface of the metal cladding layer 6.

如此,由於該金屬芯層5係以金屬材質製成,因此可使本發明之具陶瓷表面之金屬刀具保有高硬度及高韌性,而不會如習用陶瓷刀具容易因撞擊而產生碎裂之缺點。再且,由於該刃部51亦為金屬材質,因此一般使用者於該刃部51鋒利度不足時亦可自行使用磨刀石進行研磨,而不會如習用陶瓷刀具因硬度過高而造成使用者無法自行研磨,後續維護不便之缺點。Thus, since the metal core layer 5 is made of a metal material, the metal tool having the ceramic surface of the present invention can maintain high hardness and high toughness without the disadvantage that the ceramic tool can be easily broken by impact. . Moreover, since the blade portion 51 is also made of a metal material, the general user can use the whetstone to grind the blade portion 51 when the sharpness is insufficient, and the ceramic tool is not used because the hardness is too high. The person can't grind it by himself, and the shortcomings of subsequent maintenance are inconvenient.

再且,由於該金屬芯層5與該金屬覆面層6之製成材質不同,因此透過該金屬芯層5與金屬覆面層6材料選擇之搭配,可依需求調整材質搭配刀具本身所需之強度及韌性,例如高韌性之不銹鋼作為該金屬芯層5,高耐蝕性之鈦金屬作為該金屬覆面層6,可使該刀具同時具有高韌性及高耐蝕性。此外,透過設置該金屬覆面層6,亦可利用該金屬覆面層6作為該陶瓷表層9之材料來源,以進行該陶瓷化步驟S25而形成該陶瓷表層9。Moreover, since the metal core layer 5 and the metal cladding layer 6 are made of different materials, the metal core layer 5 and the metal cladding layer 6 are selected to match the material, and the required strength of the material matching the tool itself can be adjusted according to requirements. And toughness, such as high toughness stainless steel as the metal core layer 5, and high corrosion resistance titanium metal as the metal cladding layer 6, can make the tool have both high toughness and high corrosion resistance. Further, by providing the metal cladding layer 6, the metal cladding layer 6 can be used as a material source of the ceramic surface layer 9, and the ceramic surface layer 9 can be formed by performing the ceramization step S25.

此外,由於該金屬覆面層6的表面覆蓋有該陶瓷表層9,除了可以提高本發明具陶瓷表面之金屬刀具的硬度及耐蝕性之外,於切割食材時,亦可避免該金屬芯層5及金屬覆面層6之表面釋放出金屬離子,而造成食材殘留異味,以及加速新鮮食材表面之氧化之缺點。再且,由於該陶瓷表層9選擇為光觸媒之陶瓷材料製成,可提供殺菌效果,進而避免細菌滋生於該陶瓷表層9之表面。In addition, since the surface of the metal coating layer 6 is covered with the ceramic surface layer 9, in addition to improving the hardness and corrosion resistance of the metal tool having the ceramic surface of the present invention, the metal core layer 5 can be avoided when cutting the food material. The surface of the metal coating layer 6 releases metal ions, which causes residual odor of the food material and the disadvantage of accelerating the oxidation of the surface of the fresh food material. Further, since the ceramic surface layer 9 is selected to be a ceramic material of a photocatalyst, a bactericidal effect can be provided, thereby preventing bacteria from growing on the surface of the ceramic surface layer 9.

雖然本發明已利用上述較佳實施例揭示,然其並非用以限定本發明,任何熟習此技藝者在不脫離本發明之精神和範圍之內,相對上述實施例進行各種更動與修改仍屬本發明所保護之技術範疇,因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。While the invention has been described in connection with the preferred embodiments described above, it is not intended to limit the scope of the invention. The technical scope of the invention is protected, and therefore the scope of the invention is defined by the scope of the appended claims.

〔本發明〕〔this invention〕

1‧‧‧金屬基材1‧‧‧Metal substrate

2‧‧‧金屬芯層2‧‧‧Metal core layer

21‧‧‧側表面21‧‧‧ side surface

22‧‧‧側表面22‧‧‧ side surface

23‧‧‧刃部23‧‧‧blade

24‧‧‧刀身部24‧‧‧Tools

3‧‧‧沖模3‧‧‧ die

4‧‧‧陶瓷表層4‧‧‧Ceramic surface

5‧‧‧金屬芯層5‧‧‧Metal core layer

51‧‧‧刃部51‧‧‧blade

52‧‧‧刀身部52‧‧‧Knife body

53‧‧‧側表面53‧‧‧ side surface

54‧‧‧側表面54‧‧‧ side surface

6‧‧‧金屬覆面層6‧‧‧Metal cladding

7‧‧‧複合金屬基材7‧‧‧Composite metal substrate

8‧‧‧金屬刀胚8‧‧‧metal knife embryo

9‧‧‧陶瓷表層9‧‧‧Ceramic surface

第1圖:本發明第一實施例之具陶瓷表面之金屬刀具的製作方法的流程圖。Fig. 1 is a flow chart showing a method of manufacturing a metal tool having a ceramic surface according to a first embodiment of the present invention.

第2圖:本發明第一實施例之具陶瓷表面之金屬刀具的製作方法的成形步驟的示意圖。Fig. 2 is a schematic view showing a forming step of a method of manufacturing a metal tool having a ceramic surface according to a first embodiment of the present invention.

第3圖:本發明第一實施例之具陶瓷表面之金屬刀具的製作方法的金屬芯層的剖面圖。Fig. 3 is a cross-sectional view showing a metal core layer of a method of manufacturing a metal tool having a ceramic surface according to a first embodiment of the present invention.

第4圖:本發明第一實施例之具陶瓷表面之金屬刀具的製作方法的硬化步驟的示意圖。Fig. 4 is a view showing a hardening step of a method of manufacturing a metal tool having a ceramic surface according to a first embodiment of the present invention.

第5圖:本發明第一實施例之具陶瓷表面之金屬刀具的製作方法噴塗陶瓷粉末的示意圖。Fig. 5 is a view showing a method of manufacturing a ceramic tool having a ceramic surface according to a first embodiment of the present invention.

第6圖:本發明第一實施例之具陶瓷表面之金屬刀具經刀刃開鋒步驟後的剖視圖。Fig. 6 is a cross-sectional view showing the metal tool having a ceramic surface according to the first embodiment of the present invention after the blade opening step.

第7圖:本發明第二實施例之具陶瓷表面之金屬刀具的製作方法的流程圖。Figure 7 is a flow chart showing a method of fabricating a metal tool having a ceramic surface according to a second embodiment of the present invention.

第8圖:本發明第二實施例之具陶瓷表面之金屬刀具的製作方法的結合步驟的示意圖。Fig. 8 is a view showing a combination of steps of a method of manufacturing a metal tool having a ceramic surface according to a second embodiment of the present invention.

第9圖:本發明第二實施例之具陶瓷表面之金屬刀具的製作方法的熱處理步驟的示意圖。Fig. 9 is a view showing a heat treatment step of a method of manufacturing a metal tool having a ceramic surface according to a second embodiment of the present invention.

第10圖:本發明第二實施例之具陶瓷表面之金屬刀具的製作方法的成形步驟的示意圖。Fig. 10 is a view showing a forming step of a method of manufacturing a metal tool having a ceramic surface according to a second embodiment of the present invention.

第11圖:本發明第二實施例之具陶瓷表面之金屬刀具的製作方法的硬化步驟的示意圖。Figure 11 is a schematic view showing a hardening step of a method of manufacturing a metal tool having a ceramic surface according to a second embodiment of the present invention.

第12圖:本發明第二實施例之具陶瓷表面之金屬刀具的製作方法的陶瓷化步驟的示意圖。Fig. 12 is a schematic view showing a ceramization step of a method for producing a metal tool having a ceramic surface according to a second embodiment of the present invention.

第13圖:本發明第二實施例之具陶瓷表面之金屬刀具經刀刃開鋒步驟後的剖視圖。Figure 13 is a cross-sectional view showing a metal tool having a ceramic surface according to a second embodiment of the present invention after a blade opening step.

2...金屬芯層2. . . Metal core layer

21...側表面twenty one. . . Side surface

22...側表面twenty two. . . Side surface

23...刃部twenty three. . . Blade

24...刀身部twenty four. . . Knife body

4...陶瓷表層4. . . Ceramic surface

Claims (16)

一種具陶瓷表面之金屬刀具,包含:金屬芯層,具有一刀身部及一刃部;金屬覆面層,設置於該刀身部之表面,且該金屬覆面層與該金屬芯層為不同之金屬材料;及陶瓷表層,形成於該金屬覆面層之表面。 A metal tool having a ceramic surface, comprising: a metal core layer having a blade portion and a blade portion; a metal cladding layer disposed on a surface of the blade portion, wherein the metal cladding layer and the metal core layer are different metal materials And a ceramic surface layer formed on the surface of the metal cladding layer. 依申請專利範圍第1項所述之具陶瓷表面之金屬刀具,其中該陶瓷表層係以光觸媒之陶瓷材質製成。 A metal tool having a ceramic surface according to the first aspect of the patent application, wherein the ceramic surface layer is made of a ceramic material of photocatalyst. 依申請專利範圍第2項所述之具陶瓷表面之金屬刀具,其中該陶瓷表層係以二氧化鈦製成。 A metal tool having a ceramic surface according to the second aspect of the patent application, wherein the ceramic surface layer is made of titanium dioxide. 依申請專利範圍第1項所述之具陶瓷表面之金屬刀具,其中該金屬覆面層係以鈦金屬製成。 A metal tool having a ceramic surface according to the first aspect of the patent application, wherein the metal cladding layer is made of titanium metal. 依申請專利範圍第1項所述之具陶瓷表面之金屬刀具,其中該金屬芯層係以鋼製成。 A metal tool having a ceramic surface according to the first aspect of the patent application, wherein the metal core layer is made of steel. 一種具陶瓷表面之金屬刀具之製作方法,包含:一成形步驟,係以一成形加工方式對一金屬基材加工,以獲得一金屬刀胚;一硬化步驟,係對該金屬刀胚進行硬化熱處理;一陶瓷化步驟,係以一表面陶瓷化技術對該金屬刀胚之表面進行陶瓷化處理,使該金屬刀胚之表面形成陶瓷表層;及一刀刃開鋒步驟,係對該金屬刀胚之一端緣進行研磨開鋒。 A manufacturing method of a metal tool having a ceramic surface, comprising: a forming step of processing a metal substrate by a forming process to obtain a metal blank; and a hardening step of hardening the metal blank a ceramization step of tempering the surface of the metal blank by a surface ceramization technique to form a ceramic surface on the surface of the metal blank; and a blade opening step for the metal blank One end edge is ground to open. 依申請專利範圍第6項所述之具陶瓷表面之金屬刀具 之製作方法,其中該陶瓷化步驟中,係以微弧放電或噴塗之表面陶瓷化技術對該金屬刀胚之表面進行陶瓷化處理。 Metal tool with ceramic surface according to item 6 of the patent application scope The manufacturing method, wherein in the ceramization step, the surface of the metal blank is ceramized by a micro-arc discharge or sprayed surface ceramization technique. 依申請專利範圍第7項所述之具陶瓷表面之金屬刀具之製作方法,其中該陶瓷化步驟中,係於一磷酸鹽電解液中進行該微弧放電。 The method for manufacturing a metal tool having a ceramic surface according to the seventh aspect of the patent application, wherein the micro-arc discharge is performed in a monophosphate electrolyte in the ceramization step. 依申請專利範圍第7項所述之具陶瓷表面之金屬刀具之製作方法,其中該噴塗係將陶瓷粉末加熱噴塗於該金屬刀胚之表面形成該陶瓷表層。 The method for manufacturing a metal tool having a ceramic surface according to claim 7, wherein the spraying system heat-sprays the ceramic powder on the surface of the metal blank to form the ceramic surface layer. 依申請專利範圍第6項所述之具陶瓷表面之金屬刀具之製作方法,其中該硬化步驟中,係將該金屬刀胚加熱至700~1100℃之溫度。 The method for manufacturing a metal tool having a ceramic surface according to the sixth aspect of the patent application, wherein in the hardening step, the metal blank is heated to a temperature of 700 to 1100 °C. 依申請專利範圍第6項所述之具陶瓷表面之金屬刀具之製作方法,其中該成形步驟中,係利用雷射切割或沖切之成形加工方式對該金屬基材加工。 The method for manufacturing a metal tool having a ceramic surface according to the sixth aspect of the patent application, wherein the metal substrate is processed by a laser cutting or die cutting forming process. 依申請專利範圍第6項所述之具陶瓷表面之金屬刀具之製作方法,其中該成形步驟中,係對一複合金屬基材進行加工,且該金屬刀胚包含金屬芯層及金屬覆面層,且該金屬覆面層係設置於該金屬芯層之表面。 The method for manufacturing a metal tool having a ceramic surface according to claim 6 , wherein in the forming step, a composite metal substrate is processed, and the metal blank comprises a metal core layer and a metal coating layer. And the metal cladding layer is disposed on the surface of the metal core layer. 依申請專利範圍第12項所述之具陶瓷表面之金屬刀具之製作方法,其中進行該成形步驟前,係先進行一熱處理步驟對該複合金屬基材加熱。 The method for manufacturing a metal tool having a ceramic surface according to claim 12, wherein before the forming step, the composite metal substrate is heated by a heat treatment step. 依申請專利範圍第13項所述之具陶瓷表面之金屬刀具之製作方法,其中進行該熱處理步驟前,係先進行一結合步驟,以硬焊結合、軋延結合或爆炸結合之加工方式 使金屬芯層結合於數層金屬覆面層之間,以共同形成該複合金屬基材。 The method for manufacturing a metal tool having a ceramic surface according to claim 13 of the patent application, wherein before the heat treatment step, a bonding step is first performed, and the processing method is a combination of brazing bonding, rolling bonding or explosion bonding. A metal core layer is bonded between the plurality of metal cladding layers to collectively form the composite metal substrate. 依申請專利範圍第13項所述之具陶瓷表面之金屬刀具之製作方法,其中該熱處理步驟係將該複合金屬基材加熱至700~1100℃之溫度。 A method of manufacturing a metal tool having a ceramic surface according to claim 13 wherein the heat treatment step heats the composite metal substrate to a temperature of 700 to 1100 °C. 依申請專利範圍第14項所述之具陶瓷表面之金屬刀具之製作方法,其中在進行該結合步驟之前,該金屬芯層及金屬覆面層係先經清潔前處理後,再進行該結合步驟。 The method for manufacturing a metal tool having a ceramic surface according to claim 14, wherein the metal core layer and the metal coating layer are subjected to a pre-cleaning treatment before the bonding step.
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US6431066B1 (en) * 2000-01-25 2002-08-13 Btg Eclepens S.A. Doctor blade
TWM336354U (en) * 2008-02-25 2008-07-11 Cosmos Vacuum Technology Corp Ceramic-coated light alloy fastening component
TWM363985U (en) * 2009-04-14 2009-09-01 Anor Prec Ceramic Ind Co Ltd Ceramic knife with counterweight

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6431066B1 (en) * 2000-01-25 2002-08-13 Btg Eclepens S.A. Doctor blade
TWM336354U (en) * 2008-02-25 2008-07-11 Cosmos Vacuum Technology Corp Ceramic-coated light alloy fastening component
TWM363985U (en) * 2009-04-14 2009-09-01 Anor Prec Ceramic Ind Co Ltd Ceramic knife with counterweight

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