TW414743B - Manufacturing method of a cast iron welding rod - Google Patents

Manufacturing method of a cast iron welding rod Download PDF

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Publication number
TW414743B
TW414743B TW87116356A TW87116356A TW414743B TW 414743 B TW414743 B TW 414743B TW 87116356 A TW87116356 A TW 87116356A TW 87116356 A TW87116356 A TW 87116356A TW 414743 B TW414743 B TW 414743B
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Taiwan
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electrode
iron
manufacturing
welding
welding rod
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TW87116356A
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Chinese (zh)
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Chuan-Sheng Liu
Jen-Ming Sung
Shu-Ren Jang
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Liu Chuan Sheng
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Publication of TW414743B publication Critical patent/TW414743B/en

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Abstract

The invention provides a manufacturing method of a cast iron welding rod, which includes the following steps: (1) Place a preset composition of a welding rod material into high frequency induction furnace to melt. (2) Guide the melted liquid passing between two rollers for cold rolling to solidify and form thin metal plate. (3) Heat treat the thin metal plate properly. (4) Cut the thin metal plate into a metal rod. (5) Surface treat the metal rod to be a welding rod; By above-mentioned method, it can strengthen structure, and decreasing treating process and manufacturing cost.

Description

^14743 A7 、_____B7__ 五、發明説明([) 本發明偽有顆於一種鑄鐵焊條之製造方法,尤指一種 利用待殊的機器設備來裂造縛鐵焊條的方法,其可達到強 化組繊、縮短處理過程及製造成本的功效者。 按,鑄鐵是指含碳最2.0〜6.67¾的鐵-硪合金而言, 熔點比銅低,另外,由於矽的添加使得熔液的流動性良好 而容易鑲造,且價格便宜,所以目前廣泛應用於工業界; 由於縳鐵是以鑲出的狀態直接使用,未再經過任何加工處 理,但鋳造物常有氣孔、縮孔或應力造成的破裂等缺陷, 故需加以焊接或補焊,然而鏞鐵在焊接時會產生下列的焊 接問題: 1. 鑄鐵由熔融狀態急冷時易白口化,造成失敗的焊接。 2. 在焊接時其内所含的硪將被氧化成氣體,而在焊道產 生氣孔或點蝕。 3. 焊接時易造成應力集中,發生破裂現象。 4 .焊接時,焊道的延性與籾性降低、硬度增加,造成切 削加工的困難與裂化現象。 5.鑄體内部的氣孔、砂疵,易導致焊接失敗。 經濟部中央樣率局負工消费合作社印策 -------- k.------ΐτ (請先閱讀背面之注意事項再填寫本頁) 而為了防止焊件生成白縳鐵(白口化),通常須先將焊 件加熱到500〜60〇υ預熱,在紅熱狀態予以焊接,而為了 提供足夠的熱置,要連鑲熾動,焊後在稻草灰中徐冷;預 熱可改善熔接之熔合性、降低溫度梯度和殘留應力而避免 破裂變形、改善切削性,但預熱時需注意急熱會導致破裂 ,只能缓慢加熱,因為反覆加熱、冷卻,容易導致鋳鐵膨 脹變大,所以,當鎊鐵體積大且形狀複雜時,加熱造成的 ___第3頁_ 本紙张尺度適用中國困家標率(CNS ) Α4说格(210><297公釐} 經濟部中央標率局貝工消费合作社印製 414743 A7 B7 五、發明説明(2 ) 應力也大,故必須使各部份均勻加熱,不能局部加熱,宜 用專用爐加熱;此外施予退火處理可除去焊接時產生的應 力,使焊件石墨化、容易切削。 再者,一般常用之鑄鐵焊接熔填材料的分類有鐸基合 金焊條、低碌鋼焊條、銅基合金焊條……等等,其中,該 鏵基合金焊條具有與母材熔點接近,硬度低、籾性大、耐 急冷急熱,以及防止白口化等優黏,但其具有焊接處光澤 不同、連绩焊時易生裂缝等,以及價格成本高昂等缺點; 該低碩網焊條乃專為低硪銷等軟銷所設計者;而該銅基合 金焊條之熔點較母材低,色澤異於鏞鐵,常硬化、切削困 難,破裂的危險性大;若採用價格便宜的鑄鐵焊條,其焊 縫強度低、塑性差、易出現裂紋、白口組織,待別是接頭 硬度高、加工性能差,因此,如何能簡便地製造出性能優 良的鏵鐵焊條,乃業者極力研發的目標之一。 故由以上分析可知,鏵鐵為鑤造性、耐候性及吸震性 均優良之重要工程材料,但在傳統製程中,藉鋳造或軋延 獲得鑤鐵板材或焊條均不容易,由該習知之焊條製造工程 :鐵液ο棒材—線材—前處理(表面處理+烘乾)—粗抽— 退火(熱處理再處理(表面處理+烘乾細抽4退火( 熱處理)—表面處理ο分捲切線·^洗線可知,依序經過上 逑步驟才能製造出焊條,因此該等重重繁頊的加工製造過 程.乃相當費時耗力;今有鑑於前述習知之鑄鐵焊條的製 诰方法,在製造上仍有其不盡理想之處,本發明人爰針對 上述缺失加以改良,並秉持精益求精之理念,研發出製造 _第4頁_ 本紙張尺度適用中國固家標準(CNS > A4規格(210X 297公嫠) n 1 I nn ϋ n —I -I ^11 HI· I T 0¾ ,1' \請先閲讀背面之注意事項再填寫本頁) A7 414743 B7 五、發明説明(3 ) 簡便之本發明以供使用。 即,本發明之主要目的:在於提供一種可簡化製程、 降低成本,且可任意調整成份之縛鐵焊條之製造方法。 爰是,本發明之一種鏵鐵焊條之製造方法,其包含下 逑步驟: (一) 將預先設定成份之焊條材料置入高週波感應爐中 熔融; (二) 將該熔融液體導引經由二滾輪之間滾軋冷卻,成 為金屬薄板; (三) 將金屬薄板加以適當之熱處理; (四) 將此金屬薄板加工切條成為金屬條; (五) 令該等金屬條表面處理以成為焊條。 為更進一步詳細説明本發明,乃以一實施例試説明如 下,但本發明之範圍並不以該實施例為限。 本發明實施例之一種鑲鐵焊條的製造方法,該鏵鐵焊 條乃具有高磺高矽的成份,今係以下述成份為例:3.0X〜5 .0¾重童份的C(磺)、3,(U〜5.0¾重量份的Si (砂)及0.6(U〜0 .753;重量份的Mu (錳),其餘的重量份則為Fe(鐵);當然, 本發明所用以產製之焊條成份並不以此為限。 本發明實施例之製造方法:係將連鑄鏞鐵於接種球化 處理後,以高週波感應埔進行熔煉,經除渣後藉由薄板連 鑄機凝固成型,其中本實施例係採用異徑雙滾輪式連鏵機 ,如第一圖所示,連鋳時,該經過高週波感應爐1熔融的 鐵液2,於感應燼1出口處經由該鋼液分配器3的均勻分 _第5頁__ 本纸張尺度適用中國國家梂準(CNS ) A4規格(2丨OX297公釐) II - 1,- m I - m 1^1 - -- i 0¾.Js (請先聞讀背面之注意事項再填寫本頁} 經濟部中央橾準局負工消費合作社印掣 414743 A7 B7 五、發明説明(4 ) 配,再向後經由該主滾輪4及上滾輪5之間的滾軋,乃形 成金屬薄片6,滾輪轉速隨預定得到之薄板厚度做調整, 鋳成之薄Η板寬約100mm,板厚隨成份及轉速改變,範圍 約0.5~5mm,冷卻速率約10a〜103C/Sec,熱處理條件為9 SOtJlhr,然後燫冷至720它恆溫3hr後爐冷至室溫,原本 鏵態基地中生成的腌相磺化物(Fe3C)完全分解為鐵(Fe)及 石墨(C),經此石墨化處理之薄板,其組雜為撤細肥粒鐵 晶粒基地及散佈其中的徹細石墨,可冷軋並具相當延性, 薄板也由原來脆性破壊轉換至延伸率逹10¾以上,經剪床 加工可獲得預定焊條尺寸;亦即本發明之焊條製造工程為 :熔融鐵水—薄板連薄成形4熱處理4加工(剪床切條)> 表面處理4洗線;其中,亦可在該表面處理之後再經過滾 圓的步驟。 本發明薄板連績鑲造製程是近形體成型技術的一種, 經濟部中央標率局貝工消費合作社印製 (請先閲讀背面之注^^項再填寫本頁) 將金屬薄Μ連鑲不但可簡化薄Η生產流程、節省能源,更 可直接鋳出難軋延的合金板材,以簡化傳統厚銷胚軋延所 需之複雜過程,開拓難軋延材新的製造方法,另外在製程 中急速凝固效果,可縮短熱處理時間,藉以降低生產成本 ,另外,對傳統難軋延材而言,利用此製程直接澆鏞成薄 Η,在生產上確可提供快速而簡便的技術。而本發明之方 法乃提供下列之特徽及優點: 1 .滾輪急速凝固製程的急冷效果,造成連鎊薄Μ硪化物 間距撤細,有助於石墨化處理時硪化物分解,導致石 墨化時間較傳統鋳件短,石墨顆粒數亦較多 ________第 6 頁_ 本紙張尺度適用中國國家標準(CNS ) Α4規格(210X297公嫠) 414743 A7 ____ B7 五、發明説明(5 ) 2.提高連鏵鋳鐵薄Η之矽含量有助於縮短石墨化時間, 降低石墨化溫度,高矽4.6Si薄片可於At變態點以下 ,低溫分解共晶破化物,完成石墨化處理,經水淬可 得肥粒鐵基塊狀石墨鑄鐵板,以縮短退火處理、減少 預熱、強化組織性質,大童縮短加工處理的時間。 再者.本發明較習知之焊條製造方法為佳的優點乃在 於: 一、 步驟簡軍:其係利用連禱薄板而後切條加工的方式製 造該焊條,並不須經過如習知般多次的處理抽拉軋延 ,因此本發明之製造步驟相當的簡便、快速。 二、 可縮短熱處理時間、降低成本:利用此連鋳法所獲得 的鑲鐵板經石墨化可鍛處理後再經少量的熱加工即可 達到所需薄板尺寸,再經由剪床切條加工製成焊條, 其確已減少習知之多次熱處理的製程,令本發明之整 體製程較習知者短,故可降低成本者。 經濟部中央樣準局負工消費合作社印犁 I -- . - - I In HI I - ^1* I - - -1 « - U3 、言 (請先闖讀背面之注^^項再填寫本頁) 三、 條徑易更改:隨著鑲鐵焊條的材質成份及連鏞機的滾 輪轉速不同,則其所製出之金屬板厚相異,因此對應 切條製成的焊條條徑亦不相同,由此可知藉由調整連 鑲機之滾輪轉速或主滾輪4及上滾輪5之巧的間距, 確可改變焊條條徑的大小,因此其在諝整製成焊條條 徑的大小時,並不須如習知般傜多次依序抽拉控制, 本發明乃相當方便者。 四、 可随所須焊材原料成份製成焊條··硝矽含量或其他添 加元素可依被焊鑄件之成份做任意諏整,因本發明乃 _第7苜_ 本紙張尺度逋用中國國家榡準(CNS ) 格(2】0X297公釐) 414743 A7 B7 五、發明説明(心) 傺利用連鑄的方式製造該焊條,因此焊材所須添加的 各種合金元素皆可摻混入鐵液中,一體連鑄製成,相 當方便簡易。 綜觀上述,本發明之構造特徼,確能提供一種賁用之 _鐵焊條之製造方法,尤指一種利用特殊的機器設備來製 造嫌鐵焊條的方法,其可逹到強化組織、縮短處理過程及 製造成本的功效;以其整體構造及組合空間型態而言,既 未曾見諸於習知同類產品中,亦未曾公開於申請前,乃為 一新穎又具產業上利用價值之發明,爱依法提出發明專利 申請。 惟以上所述者,僅為本發明之較佳實施例而己,當不 能以此限定本發明實施之範圍,即大凡依本發明申請專利 範圍及發明説明書内容所作之簡單的等效變化與修飾,皆 應仍屬本發明專利涵蓋之範圍内。 第一圖係本發明該較佳實施例之滾壓連鑄的製程示意圖。 nv I— , i J ί I 1 I' I - .^ϋ n - - - • *T (锖先閲讀背面之注項再填寫本買) 經濟部中央標準局貝工消費合作杜印聚 本紙張尺度適用中國國家梂準(CNS ) A4规掊(2丨OX297 fif^ 14743 A7, _____B7__ 5. Description of the invention ([) The present invention is a manufacturing method of a cast iron electrode, especially a method for cracking a bound iron electrode by using special machinery and equipment, which can achieve the strengthening group, The effect of shortening the process and manufacturing costs. In general, cast iron refers to an iron-rhenium alloy with a maximum carbon content of 2.0 to 6.67¾. Its melting point is lower than that of copper. In addition, the addition of silicon makes the melt flowable and easy to mount, and it is cheap, so it is currently widely used. It is used in the industry. Because the iron is directly used in the inlaid state without any processing, but the forged product often has defects such as blowholes, shrinkage holes or cracks caused by stress, so it needs to be welded or repaired. However, When iron is being welded, the following welding problems will occur: 1. Cast iron is easily whitened when it is quenched from the molten state, resulting in failed welding. 2. During the welding, the plutonium contained in it will be oxidized to gas, which will cause pores or pitting in the bead. 3. It is easy to cause stress concentration and cracking during welding. 4. When welding, the ductility and ductility of the bead are reduced, and the hardness is increased, resulting in difficulties and cracking of the cutting process. 5. Air holes and sand defects in the casting body may easily cause welding failure. Printed by the Central Sample Rate Bureau of the Ministry of Economic Affairs, Consumer Cooperatives -------- k .------ ΐτ (Please read the precautions on the back before filling out this page). For iron (whitening), the weldment must first be heated to 500 ~ 60〇υ preheating, and it should be welded in the red hot state. In order to provide sufficient heat, it must be inlaid, and it should be heated in the straw ash after welding. Cold; preheating can improve the fusion properties of welding, reduce the temperature gradient and residual stress to avoid cracking and deformation, and improve machinability. However, when preheating, pay attention to the rapid heating will cause cracking, and it can only be heated slowly because repeated heating and cooling are easy. As a result, the swelling iron becomes larger, so when the pound iron is large and complex in shape, the heating caused by ___ page 3 _ This paper size is applicable to the Chinese standard rate (CNS) Α4 grid (210 > < 297 Mm} Printed by the Shell Standard Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 414743 A7 B7 V. Description of the invention (2) The stress is also large, so all parts must be uniformly heated, local heating cannot be used, and it should be heated by a special furnace; Pre-annealing can remove the stress generated during welding and make welding It is graphitized and easy to cut. In addition, the commonly used classifications of cast iron welding filler materials are Duo-based alloy electrodes, low-alloy steel electrodes, copper-based alloy electrodes, etc ... The melting point of the material is close, low hardness, high toughness, resistance to rapid cold and heat, and excellent adhesion such as whitening prevention, but it has the disadvantages of different gloss at the welding place, easy cracks during continuous welding, and high cost and cost; The low-profile wire electrode is designed for soft pins such as low pin; and the copper-based alloy electrode has a lower melting point than the base metal, a color and luster different from that of hafnium, often hardened, difficult to cut, and has a high risk of cracking. Cheap cast iron electrodes have low weld strength, poor plasticity, easy cracking, and white mouth structure, but they have high joint hardness and poor processability. Therefore, how to easily produce high-performance hafnium electrode? One of the goals of the industry's vigorous R & D. Therefore, from the above analysis, it can be seen that the iron is an important engineering material with excellent moldability, weather resistance and shock absorption. However, in the traditional process, it is obtained through fabrication or rolling. It is not easy to make iron plates or welding electrodes. The conventional welding rod manufacturing process: molten iron ο bar—wire—pretreatment (surface treatment + drying) — rough drawing — annealing (heat treatment and retreatment (surface treatment + drying fine extraction) 4 Annealing (heat treatment)-surface treatment ο coiling tangent · ^ washing line It can be known that the welding electrode can be manufactured in sequence through the upper step, so the heavy and complicated processing and manufacturing process is quite time-consuming and labor-intensive; in view of the foregoing The conventional method of making cast iron welding rods is still not ideal in manufacturing. The present inventor has improved the above-mentioned shortcomings and adhered to the concept of excellence to develop and manufacture _ 第 4_ This paper is applicable to China Gujia standard (CNS > A4 size (210X 297mm) n 1 I nn ϋ n —I -I ^ 11 HI · IT 0¾, 1 '\ Please read the precautions on the back before filling this page) A7 414743 B7 5. Description of the invention (3) The invention is simple for use. That is, the main object of the present invention is to provide a method for manufacturing an iron-bound electrode which can simplify the manufacturing process, reduce the cost, and can arbitrarily adjust the composition.爰 Yes, a method for manufacturing a rhenium iron electrode according to the present invention includes the following steps: (1) placing a welding electrode material with a predetermined composition in a high frequency induction furnace for melting; (2) guiding the molten liquid through the Rolling and cooling between the rollers to become a metal sheet; (3) Appropriate heat treatment of the metal sheet; (4) Processing and cutting the metal sheet into strips; (5) Surface treatment of the metal strips to become welding rods. In order to further explain the present invention in detail, an embodiment is described below, but the scope of the present invention is not limited to the embodiment. A manufacturing method of an iron-inlaid electrode according to an embodiment of the present invention. The hafnium iron electrode has a high sulphur and high silicon content. Here is an example of the following composition: 3.0X ~ 5.02 weight C (sulfur), 3 (U ~ 5.0¾ parts by weight of Si (sand) and 0.6 (U ~ 0.753; parts by weight of Mu (manganese), and the remaining parts by weight are Fe (iron); of course, the invention is used to produce The composition of the welding rod is not limited to this. The manufacturing method of the embodiment of the present invention is: after continuous casting of spheroidal iron is inoculated and spheroidized, it is smelted with a high frequency induction pond, and after slag removal, it is solidified by a thin-plate continuous casting machine. In this embodiment, a double-roller flail machine with different diameters is used in this embodiment. As shown in the first figure, when the flail is molten, the molten iron 2 that has passed through the high-frequency induction furnace 1 passes through the molten steel at the exit of the induction embers 1. Even distribution of dispenser 3_Page 5__ This paper size applies to China National Standard (CNS) A4 (2 丨 OX297 mm) II-1,-m I-m 1 ^ 1--i 0¾ .Js (Please read the precautions on the back before filling out this page} Printed by the Central Consumers' Bureau of the Ministry of Economic Affairs, Consumer Cooperatives 414743 A7 B7 V. Description of Invention (4), and then backward Through the rolling between the main roller 4 and the upper roller 5, a metal sheet 6 is formed. The rotation speed of the roller is adjusted according to the thickness of the thin plate obtained. The width of the thin thin plate is about 100mm. The thickness of the plate changes with the composition and speed. The range is about 0.5 ~ 5mm, the cooling rate is about 10a ~ 103C / Sec, the heat treatment condition is 9 SOtJlhr, and then chilled to 720, it is kept at a constant temperature for 3hrs, and then the furnace is cooled to room temperature. The salty phase sulfide (Fe3C) generated in the original base state It is completely decomposed into iron (Fe) and graphite (C). The graphitized sheet is doped with fine-grained iron grain base and fine graphite dispersed in it. It can be cold-rolled and has considerable ductility. Sheet It is also converted from the original brittle fracture to elongation of more than 10¾, and the predetermined electrode size can be obtained by shearing machine processing; that is, the welding rod manufacturing process of the present invention is: molten molten iron—thin sheet with thin forming 4 heat treatment 4 processing (shear cutting ) ≫ Surface treatment 4 washing line; among them, the rounding step can also be performed after the surface treatment. The thin-plate continuous inlaying process of the present invention is a kind of near-shape molding technology. Printed (read first Note ^^ on the back, please fill in this page) Inserting the thin metal M can not only simplify the production process of thin steel, save energy, but also directly cut out the difficult to roll alloy sheet, in order to simplify the rolling of traditional thick pins. The complicated process, the development of new manufacturing methods of refractory rolled materials, and the rapid solidification effect in the process can shorten the heat treatment time, thereby reducing the production cost. In addition, for traditional refractory rolled materials, this process is used to directly cast into Thin slabs can indeed provide fast and simple technology in production. The method of the present invention provides the following special emblems and advantages: 1. The rapid cooling effect of the rapid solidification process of the rollers, which results in the narrowing of the thickness of the thin slabs. It is helpful for the decomposition of tritium compounds during the graphitization process, resulting in shorter graphitization time and more graphite particles. ________ page 6_ This paper size applies to China National Standard (CNS) Α4 size (210X297 cm) ) 414743 A7 ____ B7 V. Description of the invention (5) 2. Increasing the silicon content of the flint iron thin iron helps shorten the graphitization time and lower the graphitization temperature. The high silicon 4.6Si flakes can be below the At metamorphosis point. Low temperature decomposition of eutectic broken compounds, complete graphitization treatment, and water-quenching to obtain ferrous grained iron-based block graphite cast iron plates, in order to shorten the annealing treatment, reduce preheating, strengthen the structural properties, and shorten the processing time for older children. Furthermore, the advantages of the present invention over the conventional welding rod manufacturing method are as follows: 1. Simple steps: It is a method of manufacturing the welding rod by using a continuous thin sheet and then cutting the rod, and does not need to go through as many times as it is known. The process of drawing and rolling is relatively simple and fast. Second, it can shorten the heat treatment time and reduce the cost: the inlaid iron plate obtained by using this flail method can be graphitized and forged, and then a small amount of hot processing can be used to reach the required sheet size, and then cut by a shearing machine. As a welding electrode, it has indeed reduced the conventional multiple heat treatment process, which makes the overall process of the present invention shorter than the conventional one, so it can reduce costs. The Central Procurement Bureau of the Ministry of Economic Affairs, Consumers Cooperatives, India, I-.--I In HI I-^ 1 * I---1 «-U3, Yan (please read the note ^^ on the back before filling in this Page) 3. The diameter is easy to change: As the material composition of the iron-inlaid electrode and the speed of the roller of the flail machine are different, the thickness of the metal plate produced is different, so the diameter of the electrode corresponding to the cut rod is also different. From this, it can be seen that the size of the electrode diameter can indeed be changed by adjusting the speed of the rollers of the continuous setting machine or the coincident distance between the main roller 4 and the upper roller 5. Therefore, when the diameter of the electrode is finished by forming, It is not necessary to repeatedly pull and control sequentially as in the prior art, the present invention is quite convenient. 4. Welding electrodes can be made according to the ingredients of the required welding materials. The content of nitrocellulose or other added elements can be arbitrarily adjusted according to the composition of the welded casting, because the present invention is the seventh paper. Standard (CNS) grid (2) 0X297 mm 414743 A7 B7 V. Description of the invention (Heart) 制造 The electrode is manufactured by continuous casting, so various alloy elements that must be added to the welding material can be mixed into the molten iron. Integral continuous casting is quite convenient and simple. In summary, the structural features of the present invention can indeed provide a method for manufacturing iron electrodes, especially a method for manufacturing suspected iron electrodes using special machinery and equipment, which can strengthen the organization and shorten the processing process. And the effect of manufacturing cost; in terms of its overall structure and combination space type, it has neither been seen in familiar similar products nor disclosed before application. It is a novel and industrially valuable invention. File an application for an invention patent in accordance with law. However, the above are only the preferred embodiments of the present invention, and the scope of implementation of the present invention cannot be limited in this way, that is, the simple equivalent changes made according to the scope of the patent application and the content of the invention specification of the present invention and Modifications should still fall within the scope of the invention patent. The first figure is a schematic diagram of the rolling continuous casting process of the preferred embodiment of the present invention. nv I—, i J ί I 1 I 'I-. ^ ϋ n---• * T (锖 Please read the notes on the back before filling in this purchase) Central Standards Bureau of the Ministry of Economy Standards apply to China National Standards (CNS) A4 regulations (2 丨 OX297 fif

Claims (1)

414743 A8 B8 C8 D8 六、申請專利範圍 2 3 -種鑄鐵焊條之製造方法,其包含下述步驟: (一) 將預先設定成份之焊條材料置入觼中熔融; (二) 將該熔融液體導引經由數滾輪之間滾軋冷卻 ,凝固成形為金屬薄板; (三) 將金颶薄板加以適當之熱處理; (四) 將此金屬薄板加工切條成為金屬條; (五) 令該等金屬條表面處理以成為焊條。 依據申請專利範圍第.1項所逑之鋳鐵焊條之製造 方法,其中,在(五)步驟之後,可將此焊條滾圓。 依據申謓專利範圍第1項所述之鑲鐵焊條之製造 方法,該焊條之成份包含有: (一) 3.015,0%重量比的C (硪); (二) 3.015.0¾重量比的 Si (矽); (三) 0.60¾〜0.75%重量比的Mn(錳);及 (四) 其餘的重量份則為Fe(鐵> 〇 請 先 之 注 意 事 項 再 貪 裝 订 經濟部十央橾率局負工消费合作社印装414743 A8 B8 C8 D8 VI. Patent application scope 2 3-A manufacturing method of cast iron electrode, which includes the following steps: (1) Put the electrode material of the preset composition into the fused material; (2) Guide the molten liquid The rollers are cooled by rolling between several rollers and solidified into metal sheets; (3) The golden hurricane sheet is appropriately heat treated; (4) The metal sheet is processed into strips; (5) The metal strips are made Surface treatment to become electrode. According to the manufacturing method of rhenium iron electrode according to item 1. of the scope of patent application, after (5) step, the electrode can be rounded. According to the manufacturing method of the iron-inlaid electrode described in item 1 of the Shenyang patent scope, the composition of the electrode includes: (a) 3.015,0% by weight of C (的); (b) 3.015.0¾ by weight of Si (Silicon); (c) Mn (manganese) with a weight ratio of 0.60 ¾ to 0.75%; and (d) the remaining parts by weight are Fe (iron). 〇 Please pay attention to the matter before binding the Shiyang Department of Economic Affairs. Printed by the Bureau of Work Cooperatives SS
TW87116356A 1998-10-01 1998-10-01 Manufacturing method of a cast iron welding rod TW414743B (en)

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