42072G at ____B7 五、發明説明（1 ) 本發明係有關塑膠成形塑模用鋼，更詳細係有關塑膠 射出成形等塑模用之塑模用鋼，具有切削工具壽命長，加 工能率髙，切削後之被加工材的加工變形少等被削性傻之 塑膠成形塑模用鋼。 塑膠一般係以將加熱軟化的樹脂壓入塑模的成形方法 來成形。此成形用的塑模必須配合製品形狀進行塑模內面 •精密加工。此塑模價格髙，因而要求降低塑模的製作費用 塑模的製作費用當中，塑模之機械加工費最高，佔塑 模價格的大部分•故提髙塑模用鋼的被削性以降低塑模之 機械加工費用•最近，隨著塑膠製品之圓案設計提高，對 於塑模用鋼也要求提髙研磨性，及得到梨面花紋的壓花加 工性（被蝕刻性）等。此外，塑模用鋼必須具備機械特性 (硬度*耐力，延伸性，韌性），放電加工性，塑模修補 再生之必要的焊接性（焊接修補性）等塑摸用鋼的一般特 性· 塑膠成形塑模用鋼一般使用s 5 5 C等碳鋼， 經濟部中央樣準局貝工消费合作社印掣 S CM4 4 0等中'碳低合金鋼。有些談論如何提髙這些塑 模用鋼的被削性。例如，特公平1 一 2 1 8 6 7號公報， 特開平4 一 1 1 61 39號公報中揭示添加S ’ Pb ’ S e，Te或REM (稀土類金靥）等提髙被削性元素（ 快削性元素）的鋼•但添加這些快削性元素時，雖可提高 被削性，卻會使鋼中夾雜物增加•降低研磨性及壓花加工 性（被蝕刻性）。因此，提案提髙S含有率，且添加Sr 本紙張尺度逋用中國國家標準（CNS ) A4規格（210X297公釐） -4 · 420720 A7 B7 五、發明説明（2 ) 取代添加快削性元素而非增加金靥夾雜物提髙被削性，生 成長度/寬比儘可能縮小的硫化物提髙被削性的鋼（特公 昭62 -34828號，特公平1-14988號，特公 2 -5813號，特公平3 — 6810 3號公報）·這個 解決方案也會隨著非金屬夾雜物增加使焊接性降低，增加 機械特性之各向異性等問題。特公昭6 0 — 4 1 700號 ，特開平2 — 2 3 3 9 5 3號公報掲示使含有C u提髙被 削性的鋼而不採用藉添加上述快削性元素或以非金屬夾雜 物的形態控制改善被削性的方法。但這些對策實際上無法 得到削減塑模製作費用之被削性的改善效果。 以往之塑膠成形塑模用鋼之S i會妨害被削性，故壓 低其含量。前述專利公報所揭示之實施例有一部分雖有1 %左右之S i含量，但幾乎都是小於0 . 5%· 本發明的目的係提供具備切削工具壽命長，切削加工 · 能率髙，切削加工時變形少之優異的被削性，而且，研磨 性、壓花加工性（被蝕刻性），焊接修補性等特性也優異 的塑膠成形塑模用鋼。 本發明人等研究開發被削性以解決前述各種手段無法 解決的上述問題。特別是研究依據二次離子質量分析法撿 査切削屑表面之生成物等切削加工的摩擦學。與以往認爲 s i會妨害被削性的想法不同，結果發現S i含量高裨削 性較佳。將發明人等的見解整理如下· ①使用被削性差之低s i鋼（調査例之S i : 0 . 0 7重量％，以下化學組成之％表示重量％)的超硬 本紙張尺度適用中國國家標準（CNS ) A4规格（2丨0><297公釐） 讀 先 聞 讀 背 之 注 意 項42072G at ____B7 V. Description of the invention (1) The present invention relates to steel for plastic molding, and more specifically to steel for plastic injection molding and other molds. It has a long service life of cutting tools, high machining efficiency, and The material to be processed is less deformed, and the steel for plastic molding is less sharp. Plastic is generally formed by a molding method in which a heat-softened resin is pressed into a mold. The plastic mold used for forming must be matched to the shape of the product. The price of this mold is high, so it is required to reduce the production cost of the mold. Among the production costs of the mold, the machining cost of the mold is the highest, which accounts for most of the price of the mold. Machining costs of plastic molds • Recently, with the improvement of the design of plastic products, it is also required to improve the abrasiveness of mold steel and the embossability (etchability) of pear pattern. In addition, the steel for molding must have mechanical characteristics (hardness * endurance, elongation, toughness), electrical discharge processability, and the weldability (soldering repairability) necessary for mold repair and regeneration, etc. General characteristics of plastic molding steel · Plastic molding Carbon steel such as s 5 5 C is generally used as the mold steel, and medium-carbon low-alloy steel such as S CM4 4 0 is printed by the Shell Cooperative Consumer Cooperative of the Central Samples Bureau of the Ministry of Economic Affairs. Some talk about how to improve the machinability of these mold steels. For example, Japanese Patent Publication No. 1 2 1 8 6 7 and Japanese Unexamined Patent Publication No. 4 1 1 61 39 disclose the addition of extractable elements such as S'Pb'Se, Te or REM (rare-earth gold tincture). (Fast-cutting elements) steel • However, when these fast-cutting elements are added, although the machinability is improved, the inclusions in the steel are increased. • The abrasiveness and embossability (etchability) are reduced. Therefore, the proposal mentions the S content rate and adds Sr. This paper size uses the Chinese National Standard (CNS) A4 specification (210X297 mm) -4 · 420720 A7 B7 V. Description of the invention (2) Instead of adding a fast-cutting element, Non-increasing the machinability of gold inclusions to improve the machinability of sulfide to reduce the length / width ratio as much as possible (Japanese Patent Publication No. 62-34828, Japanese Patent Publication No. 1-14988, Japanese Patent Publication No. 2-5813 No. 3, JP 3, 6810 3) This solution will also reduce the weldability and increase the anisotropy of mechanical properties as non-metallic inclusions increase. Japanese Patent Publication No. 6 0 — 4 1 700, Japanese Patent Application Laid-Open No. 2 — 2 3 3 9 5 3 shows that steels containing Cu can be used to improve machinability without using the above-mentioned fast-cutting elements or non-metallic inclusions. The method of morphological control to improve the exploitability. However, these countermeasures cannot actually improve the machinability of cutting mold manufacturing costs. The S i of the conventional steel for plastic forming and molding has hindered the machinability, so the content is reduced. Some of the embodiments disclosed in the aforementioned patent publications have a Si content of about 1%, but almost all of them are less than 0.5%. The object of the present invention is to provide a cutting tool with a long life, cutting processing, high efficiency, and cutting processing. It has excellent machinability with less deformation, and also has excellent abrasiveness, embossing workability (etchability), welding repairability, and other characteristics. The present inventors have researched and developed to solve the above-mentioned problems that cannot be solved by the aforementioned various means. In particular, it studies the tribology of cutting processes such as picking up products on the surface of chips based on secondary ion mass analysis. Different from the previous thought that s i would hinder the exploitability, it was found that the higher the content of Si, the better the exploitability. The findings of the inventors are summarized as follows: ① The ultra-hard paper size using low-si steel with poor machinability (S i in the survey example: 0.07% by weight, and the following chemical composition in% represents weight%) is applicable to China Standard (CNS) A4 specification (2 丨 0 > < 297 mm) Notes on reading first reading and reading back
i 經濟部中央橾準局貝工消费合作社印製 經濟部中央樣準局貝工消费合作社印装 420720 - 五、發明説明（3 ) 工具的切削屑表面所生成的氧化皮膜係以C r，Μη的氧 化物爲主β ② 使用被削性優之髙S i鋼（調査例之S i : 1 . 5 6%)之超硬工具的切削屑表面所生成的氧化皮膜 係以低融點之Si02-Fe0系爲主· ③ 高S i鋼中，S i 02爲主之低融點的氧化皮膜在 切削工具與被切削材之間具有潤滑劑的作用· ④ Si含量增加，塑模用鋼的A C1變態溫度也昇高（ _1)。例如AC1變態溫度在S i含量0 . 5%時爲 760ΐ· 1 . 0%時爲800 °C。因Si的效果使塑模 用鋼的A C1變態溫度比切削時塑模用鋼的表面溫度（以超 硬工具進行塑模用鋼之銑刀加工時的表面溫度爲7 0 0〜 7 5 0 °C)髙，可防止奧氏體變態。故切削加工後之被加 工材的加工變形較少。 ⑤ 提髙S i含量能提髙塑模用鋼的被削性（加工能率 ，工具壽命），同時可降低切削加工後之被加工材的加工 變形· • · ⑥ 對於⑤的塑模用鋼不需添加快削性元素，以Z r控 制硫化物的形態等·可提高被削性*因此’提高被削性’ 同時提髙研磨性，而且，切削加工後的被加工材的加工變 性較少。也不會損害塑模用鋼之其他特性。 本發明係依據上述見解所完成的’要點如下列（1 ) 〜（3 )所示· (1 )—種塑膠成形塑模用鋼，其特徵係含有重量比 本紙張尺度適用中國國家標準（CNS ) A4現格（210X297公釐> (請先閲讀背面之注意事項再f本頁) .裝. ^14 · -一°1 B7 五、發明説明（4 )i Printed by the Shellfish Consumer Cooperative of the Central Government Bureau of the Ministry of Economic Affairs Printed by the Shellfish Consumer Cooperative of the Central Sample Bureau of the Ministry of Economic Affairs The main oxide is β. ② The oxide film formed on the chip surface of a superhard tool using 髙 Si steel with excellent machinability (Si in the survey example: 1.56%) is made of Si02 with a low melting point. -Fe0 system is the main type. ③ In high Si steel, Si 02 is the low melting point oxide film. It acts as a lubricant between the cutting tool and the material being cut. ④ The Si content increases, and the A C1 metamorphosis temperature also rises (_1). For example, the AC1 metamorphic temperature is 760ΐ · at 1.0% and 800 ° C at 1.0%. Due to the effect of Si, the A C1 abnormal temperature of the mold steel is lower than the surface temperature of the mold steel during cutting (the surface temperature when the milling cutter of the mold steel is processed with a superhard tool is 7 0 0 to 7 5 0 ° C) 髙, can prevent austenite from deforming. Therefore, the machining deformation of the processed material after cutting is less. ⑤ Increasing the Si content can improve the machinability (processing energy rate, tool life) of the steel for molding, and at the same time reduce the processing deformation of the workpiece after cutting. • • ⑥ Need to add fast-cutting elements, control the sulfide form with Zr, etc. · Improve the machinability * Therefore 'improve the machinability' and improve the grindability at the same time, and there is less processing degeneration of the workpiece after cutting . It will not impair other characteristics of the steel for molding. The present invention is based on the above-mentioned insights. The main points are as shown in the following (1) to (3). (1) —A kind of steel for plastic molding, which is characterized by containing a weight ratio of this paper. The Chinese standard (CNS) ) A4 (210X297mm > (Please read the precautions on the back before f this page). Packing. ^ 14 ·-一 ° 1 B7 V. Description of the invention (4)
F C * 0 • 0 5 0 • 5 5 % S 1 ； 0 • 5 0 2 5 % Μ n : 0 • 1 0 2 • 5 0 C r : 0 3 • 0 % 、 Ν i ； 0 2 • 0 % 、 Μ 0 : 0 1 • 5 % V ： 0 0 • 5 0 % 、 Ρ : 0 • 0 3 5 % 以 下 、 S • 0 • 0 8 0 % 以 下 、 A 1 ; 0 • 0 2 % 以 下 、 B 0 0 • 0 1 % B i ; 0 0 • 0 5 % 、 B e : 0 0 • 1 % •s P b ; 0 0 • 0 5 % 、 T e ; 0 0 • 0 5 % N d ; 0 0 * 1 % 0 ( 氧 ) ; 0 • 0 0 1 0 及 不 可 避 免 之 m 質 所 構 成 〇 008%，剩餘部分由 經濟部中央標準局員工消费合作社印製 (請先閱讀背面之注意事項再^^本頁) (2 )如上述（1 )之塑膠成形塑模用鋼，其中S i含量 爲 1 . 0 〜2 . 5 % β 圖面簡單說明 圖1係表示塑模用鋼之S i含量與AC1變態溫度的關 係圖。 本紙張尺度適用中國國家標準（CNS ) A4規格（210χ 297公釐） A7 B7 420720 五、發明説明（5 ) 圖2係表示塑模用鋼之s i含量與使用超硬工具之塑 模用鋼進行銑刀加工之工具壽命的關係圖。 圖3係表示塑模用鋼之S i含量與使用超硬工具進行 塑模用鋼之端銑刀加工能率的關係圖。 圖4係表示塑模用鋼之S i含量與使用高速工具進行 塑模用鋼端銑刀加工之工具壽命的關係圖· 圖5係表示塑模用鋼的S i含量與使用高速工具進行 塑模用鋼端銑刀加工之加工能率的關係圖。 圖6係表示塑模用鋼的S i含量與使用超硬工具進行 塑模用鋼之銑刀加工之被加工材之加工變形的關係圖。 本發明之塑膠成形塑模用鋼（以下稱爲本發明鋼）的 特徵與以往的構想不同，係選擇高S i含量之塑膠成形塑 模用鋼•以下說明本發明鋼之S i含量的適當範圍及其依 據。 首先研究具有表1之化學組成的塑膠成形塑模用鋼在 使超音工具進行銑刀加工的被削性· {請先閲讀背面之注意事項再^本頁) 裝.FC * 0 • 0 5 0 • 5 5% S 1; 0 • 5 0 2 5% M n: 0 • 1 0 2 • 5 0 C r: 0 3 • 0%, Ν i; 0 2 • 0%, Μ 0: 0 1 • 5% V: 0 0 • 5 0%, P: 0 • 0 35% or less, S • 0 • 0 8 0% or less, A 1; 0 • 0 2% or less, B 0 0 • 0 1% B i; 0 0 • 0 5%, B e: 0 0 • 1% • s P b; 0 0 • 0 5%, T e; 0 0 • 0 5% N d; 0 0 * 1 % 0 (oxygen); 0 • 0 0 1 0 and unavoidable m quality 008%, the remaining part is printed by the staff consumer cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before ^^ this page) ) (2) The steel for plastic forming and moulding as described in (1) above, in which the Si content is 1.0 to 2.5% β. Brief description of the drawing Figure 1 shows the Si content and AC1 deformation of the steel for moulding. Diagram of temperature. This paper size applies Chinese National Standard (CNS) A4 specification (210 x 297 mm) A7 B7 420720 V. Description of the invention (5) Figure 2 shows the si content of the steel for plastic mold and the steel for plastic mold using super hard tools. Diagram of tool life for milling cutters. Fig. 3 is a graph showing the relationship between the Si content of the steel for molding and the machining efficiency of the end mill for the steel for molding using a super-hard tool. Figure 4 is a graph showing the relationship between the Si content of the steel for molding and the tool life of the steel end mill for high-speed tools. Figure 5 is a graph showing the Si content of the steel for molding and the use of high-speed tools for plastics. Relation diagram of machining energy rate for steel end mills for molds. Fig. 6 is a graph showing the relationship between the Si content of the steel for molding and the processing deformation of the workpiece to be processed by the milling cutter of the steel for molding using a superhard tool. The characteristics of the steel for plastic molding of the present invention (hereinafter referred to as the steel of the present invention) are different from the previous ideas, and the steel for plastic molding of high S i content is selected. The following describes the appropriate Si content of the steel of the present invention. Scope and rationale. First, study the machinability of the steel for plastic molding with the chemical composition of Table 1 in the milling process of the ultrasonic tool. (Please read the precautions on the back before installing this page).
--IT 經濟部中央標準局貝工消费合作社印製 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 420720 A7 B7 五、發明説明（6 ) 表 (剩餘部分：F e、化學贼的單位：態％) No C Si Μη C r N i Mo V P s A 1 0 1 0. 26 0.07 1.18 0.10 0.03 0.02 0.01 0.011 0.031 0.001 0. 0022 2 0.25 0.26 1.21 0.12 0.03 0. 02 0.01 0.012 0.030 0.002 0.0020 3 0.27 0. 53 1.20 0.17 0.03 0.02 0.01 0.010 0. 028 0.001 0.0019 4 0.26 1.10 1.22 0.15 0.03 0.02 0.01 0.011 0.029 0.003 0. 0025 5 0.26 1.56 1.19 0.12 0. 03 0.02 0.01 0.012 0.030 0.002 0.0024 6 0.27 2.47 1.17 0.09 0. 03 0. 02 0.01 0.011 0.033 0.003 0. 0017 7 0.25 3.09 1.20 0.12 0.03 0.02 0.01 0.009 0.029 0.002 0.0015 讀 先 閱 讀 背 面 之 注 意 事 項 經濟部中央揉準局貝工消费合作社印製 本紙張尺度適用中國國家標準（CNS ) Α4規格（210X297公釐） 420720 A7 B7 經濟部中央標準局貝工消費合作社印製 五、 發明説明 ( 7 ) 圖 2 係 表 示 塑 模 用 鋼 之 S i 含 量 與 X 具 壽 命 的 關 係 y 圖 3 係 表 示 S i 含 量 與 銑 刀 加 工 時 之 加 工 能率 ( 切 削 量 化 » 以 表 1 之 塑 模 用 鋼 N 0 • 1 之 切 削 量 爲 基 準 值 1 的 比 ) 的 關 係 〇 工 具 壽 命 » 加 X 能 率皆 隨 S i 含 量 增 加 而 顯 著 提 髙 0 特 別 是 0 5 % 以 上 改 善 效 果 顯 著 1 0 % 以 上 則 可 得 到 更 好 的 效 果 〇 其 次 檢査 具 有 表 1 之 化 學 組 成 之 塑 模 用 鋼 在 使 用 高 速 度鋼 工 具 進行端銑 刀 加 工 的 被 削 性 〇 圖 4 係 表 示塑模 用 鋼 之 S i 含 量 與 工 具 壽 命 的. 關 係 9 圖 5 係 表 示 S i 含 量 i*P-f 興 加 X 能 率 的 關 係 〇 高 速 度 鋼 X 具 也 可 得 到 與 超 硬 工 具 時 同 樣 的 結 果 0 又 使 用 高 速 度 鋼 工 具 檢 査 表 1 之塑模 用 網 之鑽 孔 加 工 的 被 削 性 9 但 S i 含 量 的 效 果 與 上 述使 用 超 硬 工 具 進行 銑 刀 加 工 及 使 用 高 速 工 具 進 行 端 銑 刀 加 工 時 相 同 〇 圖 6 係 表 示 使用 超硬 工 具 對塑模 用 鋼 進行銑 刀 加 工 時 被加 工 材 切 削後 的 加 X 變形 興 S i 含 量 的 關 係 〇 得知 S i 含 量 超 過 0 * 5 % 時 加 工 變 形 顯 著 降 低 〇 此 乃 是 因 S 1 含 量 低於 0 • 5 % 時 A C 1 變 態 溫 度低 * 被加 工 材在奧 氏 體 相 的 狀 態 下 被切 削 的 緣 故 * 此 奧 氏 體 相 冷 卻 後 變 成 馬 丁 體 9 易 產 生 加 工 變 形 Ρ 另 外 > S i 含 量 超 過 0 • 5 % 時 不 會 轉 變 成 奧 氏 體 相 的 狀 態 下 被切 削加 工 9 故 不 會 產 生 上 述 變 態 9 加 X 變 形 顯 著 降 低 0 如 上 述 使 塑 膠 成 形 塑 模 用 ARfl 鋼 的 S i 含 量 爲 0 5 % 以 上 理 想 爲 1 0 % 以 上 能 明 顯 提高 超 硬 X 具 高 速 度 本紙張尺度適用申國國家橾準（CNS ) A4規格（210X297公釐） 420720 經濟部中央樣準局貝工消費合作社印製 A7 B7五、發明説明（8 ) 鋼工具，工具壽命及加工能率，同時顯著降低被加工材的 加工變形。 以下說明S i以外元素的含量及限定理由· C : C係提髙鋼強度的有效元素·但其含量小於 0 . 05%時不易確保鋼強度·而超過0 . 55%時會使 韌性及被削性惡化’故C含量爲0.05〜0·55%。 特別是重視被削性時以0.05〜0·30%爲宜。其理 由係降低C確保某程度的肥粒鐵量，S i固溶於肥料鐵相 ，此相改善切削潤滑性。僅珠層鐵或貝氏體時無法充分得 到該效果· Μη : Μη係提髙鋼之熱間加工性及可淬性之有效元 素•但含量小於0 .1 0%時無法得到Μη效果•又Μη 含量超過2.5%時切削屑表面所生成之低融點的 S i 02—F e Ο系氧化物變成髙融點之S i Οζ—ΜηΟ 系氧化物妨害被削性。因此，Μη含量爲〇.10〜 2.5%· C r : C r係提高鋼之可淬性的有效元素。本發明鋼 中C r爲非必須元素，但添加含量超過3 . 0%時會妨害 被削性，故設定上限爲3 . 0%。爲確保可淬性C r + Μη含量以〇 . 596較理想》 N i : N i係提髙鋼之可淬性的元素，但會降低綱的 被削性的作用。考慮N i爲髙價時以2 · 〇%以下爲宜。 本發明鋼中也可不含N i · Mo : Mo係必要時添加的元素，提高可淬性及回火 -----------裝-— (請先閲讀背面之注意事項再本頁) 訂 -線· 本紙張尺度適用中國國家標準（CNS ) A4说格（210X297公釐） -11 - 420720 A7 B7 五.、發明説明（9 ) 有效防止脆化的有效元素•但也有降低鋼的被削性作用， 故添加時的上限以1.5%較理想。 V : V係必要時添加的元素，鋼回火後提高軟化阻抗 的有效元素。V係形成低融點氧化物，故有助於提高S i 之被削性的效果•但含量超過0 . 5%時，會導致鋼之被 削性降低及韌性降低，故添加上限以0 . 5 0 %較理想。 P : P係妨害鋼的韌性，應儘量降低。本發明鋼係設 定0 . 0 3 5%爲上限之一般工業精鍊方法所能製造的範 圍。 S:S係提髙被削性之有效元素。但會妨害鋼的韌性 ，而且易產生焊接破裂。因此，本發明鋼的S含量爲 0.0 8 0%以下•但也可爲一般雜質程度。 : Ai?係作爲熔鋼之脫氧劑，其脫氧生成物之 Aj2203系夾雜物殘留於鋼中* Αί203系夾雜物爲硬質 物，會妨害被削性·鋼中之AJ?含量少時Aj?203系夾雜 物也少，故鋼中的Α β應儘量減少爲宜。本發明鋼含 s 〇1 . Aj?的全含量的上限爲0 . 02%。 0 :軟質之氧物系夾雜物係有效提高鋼之被削性。 例如，對於鋼中之S i 02系夾雜物也具有與切削加工時 工具之刀尖與被削物間所產生的氧化皮膜層（S i 02或 S i 02 -F eO)相同的效果。因此，0的含量下限爲 0.001%·但過多氧化物時會降低鋼的韌性，故〇含 量上限爲0 . 008%· B : B係必要時的添加元素，提高鋼之可淬性的有效 本紙張尺度適用中國國家標準（CNS M4规格（210X297公釐）. I 本 訂、 (請先閱讀背面之注意事項再^T本頁) 經濟部中央橾準局員工消费合作社印製 420' '20 A7 B7 經濟部中央標準局負工消費合作社印製 五、發明説明（10) 元素。又，B的氧化物融點低，有助於提高S i之被削性 的效果。但B含量太高時，會降低鋼的韌性及焊接性，故 B的添加上限以0 · 0 1%較理想· B i ，Be，Pb ’ Te，Nd :這些元素具有提髙 鋼的被削性效果· B’i與P b形成低融點相，改善被削性 ，T e與N d控制硫化物的形態，改善被削性•本發明鋼 即使不添加這些提髙被削性之快削性元素也具有實用上的 被削性。因此，這些元素非本發明鋼之必須元素，但要求 優異的被削性時配合需要添加即可。但B i及B e含量過 多時鋼的軔性降低，P b含量太多時切削面變粗。又， T e太多時會妨害鋼的高溫延伸性，而N d價格高。因此 ，添加這些元素時其含量上限爲B i : 〇 · 〇 5%，B e :〇. 10%，Pb :0.05%，Te :0.05%， N d : 0 . 1 %。 Z r具有改變硫化物的形態提髙鋼之被削性的效果β 但本發明鋼不一定需要藉由控制硫化物的形態來提高被削 性4本發明鋼在工業上製造時可自原料中混入〇.〇〇1 « · %以下的Z r。 本發明之塑膠成形塑模用鋼可使用通常工業上使用的 製造設備及製造方法製得。例如’以電弧式電爐將原料溶 解精鍊後，添加合金元素調整成所定的化學組成’以造塊 法鋳造鋼塊。可使用轉爐取代電爐’也可採用連績鑄造法 取代造塊法》 以本發明之塑模用鋼製造塑模時只要使用以往塑模之 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐）. ----------^II (請先閲讀背面之注意事項再•本頁) 訂 A7 B7 420720 五、發明説明（11) 製造方法製作即可。又使用所得之塑模進行塑膠射出成形 等時只要以往之塑膠成形裝置適用此塑模即可β 實施例 表2及表3表示供試材之化學組成。表2係表示本發 明鋼，表3係表示比較鋼及以往塑膠成形塑模用鋼（以下 稱爲以往鋼）的化學組成。 請 先 閱 讀 背 S) 之 注 意 事 項 裝 訂 線. 經濟部中央樣準局貝工消费合作社印袈 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） !20 A7 B7 五、發明説明（I2 ) 表2 經濟部中央標率局貝工消費合作社印裝 蘇都芬TIFiT花學組成的單位：重量％) No C Si Μη Cr Ni Mo 1 V P S A I 0 A他 1 0.10 1. 21 1.15 0.06 0.03 0.01 0.01 0.015 0.024 0.003 0.0020 2 0.32 0.85 1.18 0.11 0.02 0.01 0.01 0.019 0.033 0.010 0.0025 3 0.54 0.97 1.23 0.04 0.03 0.02 0.01 0.017 0.032 0.002 0.0033 4 0.26 0.53 1. 21 0.08 0.04 0.01 0.01 0.015 0.045 0.003 0.0011 5 0.28 2.47 1.19 0.06 0.05 0.02 0.01 0.021 0.021 0.002 0.0022 6 0.32 1.33 0.11 0.08 0.03 0.01 0.01 0.014 0.038 0.001 0.0052 7 0.17 0.89 2.45 0.07 0.04 0.02 0.01 0.017 0.055 0.003 0.0041 8 0.19 1.44 1.17 2.96 0.03 0.02 0.01 0.015 0.045 0.005 0.0033 9 0.26 1.52 1.16 0.06 1.99 0.03 0.01 0.018 0.042 0.011 0.0025 10 0.22 1.63 1.25 0.07 0.03 1.48 0.01 0.009 0.032 0.015 0.0065 11 0.25 1.51 1.22 0.11 0.04 0.01 0.47 0.020 0.023 0.002 0.0033 12 0.19 0.96 1.26 0.10 0.05 0.01 0.02 0.033 0.030 0.003 0.0015 13 0.18 0.66 1.13 0.12 0.05 0.01 0.02 0.024 0.077 0.005 0.0022 14 0.33 0.95 1.14 0.06 0.03 0.01 0.01 0.022 0.036 0.019 0.0013 15 0.38 1. 10 1.16 0.05 0.03 0.02 0.01 0.021 0.022 0.015 0.0012 16 0.32 1.09 1.24 0.10 0.05 0.02 0.02 0.018 0.021 0.012 0. 0075 17 0. 23 1.03 1.26 0.09 0.03 0.01 0.01 0.015 0.031 0.003 0.0022 B 0.0098 18 0.25 0.58 1.21 0.08 0.03 0.01 0.01 0.0H 0.035 0.004 0.0031 Bi 0.047 19 0.26 0.62 1.25 0.09 0.06 0.01 0.01 0.018 0:038 0.006 0.0014 Be 0.096 20 0. 23 0. 66 1. 18 0.06 0.04 0.03 0.01 0.016 0.033 0.015 0.0018 Pb 0.045 21 0.28. 0.54 1. 17 0.06 0.03 0.01 0.01 0.023 0.039 0.003 0.0034 Te 0.047 22 0.24 0.57 1.20 0.08 0.05 0.03 0.01 0.025 0.044 0.005 0.0018 Nd 0.094 注1 :表左端列的「No.」爲供試材No (請先閱讀背面之注意事項再¾^寫本頁) 訂 -养· 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 15 - 420720 五、發明説明（13 A7 B7 經濟部中央橾準局貝工消費合作社印製 表3 —__ (剩餘部分：F e、化學組成的單位：重量％) No C Si Μη Cr N i Mo V P S A 1 o 其他 23 0.03 1.12 1.22 0.09 0.03 0.02 0.01 0.021 0.025 0.003 0.0022 24 0.58 1.53 1.20 0.06 0.01 0.01 0.01 0.025 0.030 0.008 0.0018 25 0. 32 0.47 1.21 0.08 0.02 0.01 0.01 0.024 0.028 0.002 0.0023 26 0.26 2.56 1.20 0.10 0.01 0.02 0.01 0.023 0.024 0.001 0.0017 27 0.33 1.33 0.08 0.06 0.02 0.02 0.01 0.021 0.023 0.006 0.0011 28 0.19 0.87 2.52 0.15 0.02 0.02 0.01 0.017 0.024 0.014 0.0014 29 0.15 0.95 1.19 3.10 0.02 0.01 0.01 0.021 0.032 0.011 0.0025 30 0.24 1.54 1.17 0.22 2.05 0.01 0.01 0.018 0.030 0.008 0.0017 οι 0.21 1.61 1.21 0.14 0.14 1.52 0.01 0.016 0.026 0.007 0.0012 32 0.25 1.23 1.22 0.08 0.05 0.06 0.54 0.018 0.025 0.005 0.0020 33 0. 22 1. 14 1.18 0.09 0.02 0.04 0.03 0.038 0.027 0.002 0.0023 34 0.33 0.66 1.17 0.11 0.01 0.02 0.02 0.024 0.087 0.008 0.0017 35 0.28 0.85 1. 20 0.10 0.01 0.02 0.02 0.017 0.023 0.024 0.0018 36 0.27 0. 96 1.24 0.16 0.02 0.01 0.01 0.009 0.022 0.005 0.0008 37 0.29 1.02 1.22 0.13 0.04 0.01 0.01 0.014 0.028 0.006 0.0085 38 0. 24 0.-78 1.21 0.08 0.03 0.01 0.01 0.021 0.031 0.007 0. 0027 B 0.011 39 0.31 0.G8 1.21 0.11 0.02 0.02 0.01 0.017 0.034 0.005 0.0020 Bi 0.054 40 0.27 0.G3 1.24 0.07 0.02 0.01 0.01 0.022 0.024 0.004 0.0020 Be 0.11 il 0.26 0.74 I. 19 0.08 '0.01 0.01 0.01 0.023 0:.027 0.006 0.0026 Pb 0. 053 42 0. 30 0.92 1.20 0. 14 0:02 0.02 0.01 0.019 0.025 0.008 0. 0023 Te 0.051 Ί3 0.32 0.88 1. 20 0. 17 0.03 0.02 0.01 0. 020 0.022 0.012 0. 0024 Nd 0. 109 Μ 0. 53 0.24 0. 83 0. 00 0. 03 0.02 0.01 0.021 0.025 0.009 0. 0018 S55C Ί5 0. 38 0.26 0.78 1.11 0. 38 0.31 0.01 0.015 0.027 0.007 0. 0014 SCM440 注1 :表左端列的「No.」爲供_材No. 注2 :_的數値係在申請專利範圍第1項之 本發明鋼的化學組成範圍外 請 先 閱 讀 背 δτ 之 注 意 事 項 再 费 本紙張尺度適用中國國家標準（CNS ) A4規格（2丨0X297公釐） _ 16 _ A7 B7 420720 五、發明説明（14) 供試材係以下列的方法製作。以電弧式電爐熔解之熔 鋼調整如表2及表3所示的化學組成物，鑄造成1 〇 〇 〇 kg鋼塊。將所得之鋼塊加熱至1 2 0 0 °C後，重覆鍛伸及 镦鍛，鍛造成鍛造比4以上，得到寬4 0 0晒，厚度 .15 0 mm的素材。將此素材以加熱溫度8 5 0〜9 0 0 °C 鍛燒處理，再加熱至5 5 0〜6 5 0°C，進行火處理。以 上述處理得到之供試材的硬度爲25〜33 (shore硬度 )° , 評估上述供試材之被削性，壓花加工性，焊揆修補性 及研磨性·被削性係用超硬工具的銑刀切削加工試驗’使 用髙速工具之端銑刀切削加工試驗，以工具壽命，加工能 率及加工變形（但僅測定銑刀加工的加工變形）來評估。 被削性試驗用的試驗片的尺寸爲長4 0 0画，寬4 0 0mm ，厚1 5 0mm ·壓花加工性係對於試驗片施以氯化鐵水溶 液形成皮狀之壓花模樣的蝕刻*以有無壓花模樣斑來評估 •又，焊接修補性係依據J IS Z 3158 _規定進行 Y形焊接破裂試驗方法*焊接後試驗片有無破裂來評估。 研磨性係將試驗片的表面用手研磨成鏡面度# 3 0 0 0， 以鏡面有無不均勻來評估· 表4，表5係分別表示本發明鋼，比較鋼（含以往鋼 )的試驗結果。關於壓花加工性及研磨性*無模樣斑時， 以〇表示，有模樣斑時以X表示。對於焊接修補性，無破 裂時以〇表示，有破裂時以X表示。 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閲讀背面之注意事項再r^本頁) .裝. -訂 經濟部中央橾準局貝工消費合作社印製 4 Γ, Β7 五、發明説明（is) 表4 經濟部中央標準局員工消費合作社印製 供 被削性 壓花 焊接補 研磨性 •fin 丁件 修他 加丄Ίϊ 修 材 工具壽命(醒） 加工能率(切削量比） 加工 No 嫌胳 港楼都 捏：1¾¾ 研磨不 保依 銑刀 端銑刀 銑刀 端銑刀 (mm) 裂 均 · 1 8,100 16,300 3.2 2.8 0.02 〇 〇 〇 2 8,000 15,900 3.0 2.8 0.04 〇 〇 〇 3 7,1〇〇 16,000 2.7 2.5 0.05 〇 〇 〇 4 6,100 13,800 2.4 2.1 0.06 〇 〇 〇 5 8,300 18,500 3.5 3.0 0.02 〇 〇 〇 6 8,000 16,700 3.2 2.9 0.02 〇 〇 〇 7 6,600 15,800 3.0 2.2 0.07 〇 〇 〇 8 6,700 16,900 3.2 2.6 0.03 〇 〇 〇 9 6,200 17,100 3.1 2.5 0.05 〇 〇 〇 10 6,900 17,400 2.9 2.8 0.03 〇 〇 〇 11 7,200 17,000 2.9 2.6 0.02 〇 〇 • 〇 12 7,700 16,100 3.3 2.6 0.02 〇 〇 〇 13 8,000 14,300 2.7 2.3 0.03 〇 〇 〇 14 7,800 15,600 2.8 2.4 0.02 〇 〇 〇 15 7,700 16,200 2.9 2.9 0. 02 .〇 〇 〇 16 7,600 16,200 2.9 2.7 0.02 〇 〇 〇 17 7,900 15,800 3.0 2.6 0.02 〇 〇 〇 18 9,000 13,700 3.7 2.2 0.02 〇 〇 〇 19 8,900 14,100 3.8 2.3 0.02 〇 〇 〇 20 9,200 14,300 3.6 2.2 0.02 〇 〇 〇 21 8,400 16,600 3.3 2.8 0.02 〇 〇 〇 22 8,700 15,800 3.2 2.4 0.02 〇 〇 〇 本紙伕尺度適用中國國家標準（CNS)A4規格（210X297公釐） ----------裝-- \iy (請先閲讀背面之注意事項再^寫本頁)-Printed by the Central Standards Bureau of the Ministry of Economic Affairs, Shellfish Consumer Cooperative, this paper is printed in accordance with the Chinese National Standard (CNS) A4 (210X297 mm) 420720 A7 B7 V. Description of the invention (6) Table (Remaining parts: F e, Chemistry Unit of thief: state%) No C Si Μη C r N i Mo VP s A 1 0 1 0. 26 0.07 1.18 0.10 0.03 0.02 0.01 0.011 0.031 0.001 0. 0022 2 0.25 0.26 1.21 0.12 0.03 0.02 0.03 0.02 0.030 0.002 0.0020 3 0.27 0. 53 1.20 0.17 0.03 0.02 0.01 0.010 0. 028 0.001 0.0019 4 0.26 1.10 1.22 0.15 0.03 0.02 0.01 0.011 0.029 0.003 0. 0025 5 0.26 1.56 1.19 0.12 0. 03 0.02 0.01 0.012 0.030 0.002 0.0024 6 0.27 2.47 1.17 0.09 0. 03 0. 02 0.01 0.011 0.033 0.003 0. 0017 7 0.25 3.09 1.20 0.12 0.03 0.02 0.01 0.009 0.029 0.002 0.0015 Read the notes on the reverse side of the paper printed by the Central Government Bureau of the Ministry of Economic Affairs, Shellfish Consumer Cooperatives, and the paper dimensions are applicable to China Standard (CNS) Α4 specification (210X297 mm) 420720 A7 B7 Printed by the Shellfish Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the invention (7) 2 shows the relationship between the Si content of the steel for molding and the life of X. Figure 3 shows the content of Si and the processing energy rate of the milling cutter (cutting quantification »Table 1 for the steel for molding N 0 • 1) The cutting amount is a ratio of the reference value 1). Tool life »Add X energy rate significantly increases with the increase in Si content 髙 0, especially when the improvement effect is more than 0 5%, and the significant effect is more than 10%. Next, check the machinability of the mold steel with the chemical composition of Table 1 when using high-speed steel tools for end mill processing. Figure 4 shows the S i content of the mold steel and the tool life. Relationship 9 Figure 5 Represents the relationship of Si content i * Pf Xingjia X rate. High speed steel X tools can also obtain the same results as super hard tools. 0 High speed steel tools check table 1 Drilling of the mold net Exploited 9 but S The effect of the i content is the same as that of the above-mentioned milling process using super-hard tools and end-mill machining using high-speed tools. Figure 6 shows the cutting process of the workpiece when milling steel using plastic tools. Add X deformation to the relationship of Si content. It is known that when the Si content exceeds 0 * 5%, the processing deformation is significantly reduced. This is because the S 1 content is lower than 0. • The AC 1 metamorphic temperature is low when the content is 5%. Reasons for cutting in the austenite phase state * This austenite phase becomes Martinite after cooling 9 Prone to process deformation P In addition > When the S i content exceeds 0 • 5%, it will not be transformed into an austenite phase It will be cut 9 below, so the above-mentioned abnormality 9 will not occur. Plus X, the deformation is significantly reduced. 0 As mentioned above, the AR content of ARfl steel for plastic molding is 0.5% or more, ideally 10% or more. X High speed This paper size is applicable to the Shenyang National Standard (CNS) A4 specification (210X297 mm) 420720 Printed by the Central Bureau of Standards of the Ministry of Economic Affairs Shellfish Consumer Cooperative A7 B7 5. Invention Description (8) Steel tools, tool life And processing efficiency, while significantly reducing the processing deformation of the material being processed. The following explains the content and reasons for limiting elements other than Si. C: C is an effective element for improving the strength of steel. However, when the content is less than 0.05%, it is not easy to ensure the strength of the steel. When it exceeds 0.55%, toughness and hardness are affected. The sharpness deteriorates, so the C content is 0.05 to 0.55%. In particular, when the machinability is important, 0.05 to 0.30% is appropriate. The reason is to reduce C to ensure a certain amount of ferrous iron. S i is dissolved in the ferrous iron phase, and this phase improves cutting lubricity. This effect cannot be fully obtained only with beaded iron or bainite. Μη: Μη is an effective element for improving the hot workability and hardenability of 髙 steel. However, the Mn effect cannot be obtained when the content is less than 0.10%. When the Mn content exceeds 2.5%, the low melting point S i 02—F e 〇 series oxide generated on the chip surface becomes the melting point S i 〇ζ—Μη0 series oxide, which hinders the machinability. Therefore, the Mη content is 0.10 to 2.5%. Cr: Cr is an effective element for improving the hardenability of steel. C r is an optional element in the steel of the present invention, but when the content exceeds 3.0%, the machinability is hindered, so the upper limit is set to 3.0%. In order to ensure the hardenability, the content of C r + Mn is preferably 0.596. Ni: Ni is an element that enhances the hardenability of austenitic steel, but will reduce the machinability of the steel. When N i is considered to be a valence, it is preferable that it is not more than 2.0%. The steel of the present invention may not contain N i · Mo: Mo is an element added when necessary to improve hardenability and tempering ----------- install --- (Please read the precautions on the back before This page) Order-line · This paper size applies Chinese National Standard (CNS) A4 grid (210X297 mm) -11-420720 A7 B7 V. Description of the invention (9) Effective elements to effectively prevent embrittlement • but also reduced The machinability of steel, so the upper limit when added is ideally 1.5%. V: V is an element added when necessary. It is an effective element to increase the softening resistance after tempering. V series forms a low melting point oxide, so it helps to improve the machinability of Si. However, if the content exceeds 0.5%, the machinability and toughness of steel will be reduced. Therefore, the upper limit of addition is 0. 50% is ideal. P: P is an obstacle to the toughness of steel and should be reduced as much as possible. The steel system of the present invention sets a range that can be manufactured by a general industrial refining method with an upper limit of 0.35%. S: S is an effective element for improving the exploitability. But it will hinder the toughness of the steel, and it is easy to produce welding cracks. Therefore, the S content of the steel of the present invention is 0.0 8 0% or less. However, it may be a general impurity level. : Ai? Is used as a deoxidizing agent for molten steel. Aj2203 inclusions in the deoxidation products remain in the steel. * Α203 series inclusions are hard and will interfere with machinability. When the content of AJ? There are also few inclusions, so it is advisable to reduce A β in the steel as much as possible. 02%。 The upper limit of the total content of the steel containing s 〇1. Aj? Is 0.02%. 0: Soft oxygen-based inclusion system effectively improves the machinability of steel. For example, Si 02-based inclusions in steel have the same effect as the oxide film layer (S i 02 or S i 02 -F eO) generated between the tool tip and the workpiece during cutting. Therefore, the lower limit of the content of 0 is 0.001%. However, the excessive toughness will reduce the toughness of the steel. Therefore, the upper limit of the content of 0 is 0.008%. B: B is an effective element to increase the hardenability of the steel. Paper size applies to Chinese national standard (CNS M4 specification (210X297 mm). I order, (please read the precautions on the back before ^ T this page) Printed by the Consumers Cooperative of the Central Procurement Bureau of the Ministry of Economic Affairs 420 ''20 A7 B7 Printed by the Consumers ’Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 5. Elements of the Invention (10). In addition, the low melting point of B oxide is helpful to improve the machinability of Si. However, when the B content is too high , Will reduce the toughness and weldability of steel, so the upper limit of B is more preferably 0 · 0 1% · B i, Be, Pb 'Te, Nd: these elements have the effect of improving the machinability of steel. B'i Forms a low melting point phase with P b to improve machinability, and T e and N d control the morphology of sulfides to improve machinability. The steel of the present invention is practical even without these fast-cut elements that improve machinability. Therefore, these elements are not essential elements of the steel of the present invention, but they are required to be excellent It can be added when the machinability is required. However, when the content of B i and Be is too large, the ductility of the steel is reduced, and when the content of P b is too large, the cutting surface becomes thick. Also, when the amount of T e is too large, the high temperature elongation of the steel is hindered And N d has a high price. Therefore, when these elements are added, the upper limit of the content is Bi: 〇. 5%, Be: 0.10%, Pb: 0.05%, Te: 0.05%, and N d: 0.1. %. Z r has the effect of changing the morphology of sulfides to improve the machinability of the steel β, but the steel of the present invention does not necessarily need to improve the machinability by controlling the morphology of the sulfides. 4 The steel of the present invention can The raw material is mixed with 0.001% Zr. The steel for plastic molding of the present invention can be produced using manufacturing equipment and manufacturing methods commonly used in industry. For example, 'the electric arc furnace is used to dissolve and refine the raw materials. Then, alloy elements are added to adjust to a predetermined chemical composition. 'Steel ingots are made by block making. Converters can be used instead of electric furnaces'. Continuous casting method can also be used instead of block making. As long as the original paper size of the previous mold is used, the Chinese National Standard (CNS) A4 regulations apply (210X297 mm). ---------- ^ II (Please read the notes on the back before • this page) Order A7 B7 420720 V. Description of the invention (11) The production method can be used. Use again When the obtained mold is subjected to plastic injection molding, etc., as long as the conventional plastic molding device is applicable to the mold, β Examples 2 and 3 show the chemical composition of the test materials. Table 2 shows the steel of the present invention, and Table 3 shows Compare the chemical composition of steel with conventional steel for plastic molding (hereinafter referred to as conventional steel). Please read the note on the back of the S) gutter. The paper size of the printed paper printed by the Shell Cooperative Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs applies the Chinese National Standard (CNS) A4 specification (210X297 mm)! 20 A7 B7 V. Description of the invention ( I2) Table 2 Units composed of Sudufen TIFiT floristics printed by the Shell Standard Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs: weight%) No C Si Μη Cr Ni Mo 1 VPSAI 0 A1 0.10 1. 21 1.15 0.06 0.03 0.01 0.01 0.015 0.024 0.003 0.0020 2 0.32 0.85 1.18 0.11 0.02 0.01 0.01 0.019 0.033 0.010 0.0025 3 0.54 0.97 1.23 0.04 0.03 0.03 0.02 0.01 0.017 0.032 0.002 0.0033 4 0.26 0.53 1. 21 0.08 0.04 0.01 0.01 0.015 0.045 0.003 0.0011 5 0.28 2.47 1.19 0.06 0.05 0.02 0.01 0.021 0.021 0.002 0.0022 6 0.32 1.33 0.11 0.08 0.03 0.01 0.01 0.014 0.038 0.001 0.0052 7 0.17 0.89 2.45 0.07 0.04 0.02 0.01 0.017 0.055 0.003 0.0041 8 0.19 1.44 1.17 2.96 0.03 0.02 0.01 0.015 0.045 0.005 0.0033 9 0.26 1.52 1.16 0.06 1.99 0.03 0.01 0.018 0.042 0.011 0.0025 10 0.22 1.63 1.25 0.07 0.03 1.48 0.01 0.009 0.032 0. 015 0.0065 11 0.25 1.51 1.22 0.11 0.04 0.01 0.47 0.020 0.023 0.002 0.0033 12 0.19 0.96 1.26 0.10 0.05 0.01 0.02 0.033 0.030 0.003 0.0015 13 0.18 0.66 1.13 0.12 0.05 0.01 0.02 0.024 0.077 0.005 0.0022 14 0.33 0.95 1.14 0.06 0.03 0.01 0.01 0.022 0.036 0.019 0.0013 15 0.38 1. 10 1.16 0.05 0.03 0.02 0.01 0.021 0.022 0.015 0.0012 16 0.32 1.09 1.24 0.10 0.05 0.02 0.02 0.018 0.021 0.012 0. 0075 17 0. 23 1.03 1.26 0.09 0.03 0.01 0.01 0.015 0.031 0.003 0.0022 B 0.0098 18 0.25 0.58 1.21 0.08 0.03 0.01 0.01 0.0H 0.035 0.004 0.0031 Bi 0.047 19 0.26 0.62 1.25 0.09 0.06 0.01 0.01 0.018 0: 038 0.006 0.0014 Be 0.096 20 0. 23 0. 66 1. 18 0.06 0.04 0.03 0.01 0.016 0.033 0.015 0.0018 Pb 0.045 21 0.28. 0.54 1 17 0.06 0.03 0.01 0.01 0.023 0.039 0.003 0.0034 Te 0.047 22 0.24 0.57 1.20 0.08 0.05 0.03 0.01 0.025 0.044 0.005 0.0018 Nd 0.094 Note 1: "No." at the left end of the table is the test material No. (Please read the precautions on the back first) Again ¾ ^ write this page) Order-keeping · This paper size applies to Chinese national standards (CNS ) A4 specification (210X297 mm) 15-420720 V. Description of the invention (13 A7 B7 Printed by the Central Consumers' Bureau of the Ministry of Economic Affairs, Shellfish Consumer Cooperatives, Table 3 —__ (Remaining part: Fe, chemical composition unit: weight%) No C Si Mn Cr N i Mo VPSA 1 o Others 23 0.03 1.12 1.22 0.09 0.03 0.02 0.01 0.021 0.025 0.003 0.0022 24 0.58 1.53 1.20 0.06 0.01 0.01 0.01 0.025 0.030 0.008 0.0018 25 0. 32 0.47 1.21 0.08 0.02 0.01 0.01 0.024 0.028 0.002 0.0023 26 0.26 2.56 1.20 0.10 0.01 0.02 0.01 0.023 0.024 0.001 0.0017 27 0.33 1.33 0.08 0.06 0.02 0.02 0.01 0.021 0.023 0.006 0.0011 28 0.19 0.87 2.52 0.15 0.02 0.02 0.01 0.017 0.024 0.014 0.0014 29 0.15 0.95 1.19 3.10 0.02 0.01 0.01 0.021 0.032 0.011 0.0025 30 0.24 1.54 1.17 0.22 2.05 0.01 0.01 0.018 0.030 0.008 0.0017 οι 0.21 1.61 1.21 0.14 0.14 1.52 0.01 0.016 0.026 0.007 0.0012 32 0.25 1.23 1.22 0.08 0.05 0.06 0.54 0.018 0.025 0.005 0.0020 33 0. 22 1. 14 1.18 0.09 0.02 0.04 0.03 0.038 0.027 0.002 0.0023 34 0.33 0.66 1.17 0.11 0.01 0.02 0.02 0.024 0.087 0.008 0.0017 35 0.28 0.85 1. 20 0.10 0.01 0.02 0.02 0.017 0.023 0.024 0.0018 36 0.27 0. 96 1.24 0.16 0.02 0.01 0.01 0.009 0.022 0.005 0.0008 37 0.29 1.02 1.22 0.13 0.04 0.01 0.01 0.014 0.028 0.006 0.0085 38 0. 24 0 .-- 78 1.21 0.08 0.03 0.01 0.01 0.021 0.031 0.007 0. 0027 B 0.011 39 0.31 0.G8 1.21 0.11 0.02 0.02 0.01 0.017 0.034 0.005 0.0020 Bi 0.054 40 0.27 0.G3 1.24 0.07 0.02 0.01 0.01 0.022 0.024 0.004 0.0020 Be 0.11 il 0.26 0.74 I .19 0.08 '0.01 0.01 0.01 0.023 0: .027 0.006 0.0026 Pb 0. 053 42 0. 30 0.92 1.20 0. 14 0: 02 0.02 0.01 0.019 0.025 0.008 0. 0023 Te 0.051 Ί3 0.32 0.88 1. 20 0. 17 0.03 0.02 0.01 0. 020 0.022 0.012 0. 0024 Nd 0. 109 Μ 0. 53 0.24 0. 83 0. 00 0. 03 0.02 0.01 0.021 0.025 0.009 0. 0018 S55C Ί5 0. 38 0.26 0.78 1.11 0. 38 0.31 0.01 0.015 0.027 0.007 0. 0014 SCM440 Note 1: "No." in the left end of the table is the material No. Note 2: The number of _ is outside the chemical composition range of the steel of the present invention in the scope of patent application No. 1 Please read first Note on δτ Fees This paper size applies to Chinese National Standard (CNS) A4 specifications (2 丨 0X297 mm) _ 16 _ A7 B7 420720 V. Description of the invention (14) The test materials are prepared by the following methods. The chemical composition shown in Tables 2 and 3 was adjusted with the molten steel melted by the electric arc furnace, and cast into a 1,000 kg steel block. After heating the obtained steel block to 120 ° C, the forging and upsetting and upsetting are repeated, and the forging ratio is more than 4 to obtain a material with a width of 400 ° and a thickness of .15mm. The material is calcined at a heating temperature of 8 50 to 9 0 ° C, and then heated to 5 50 to 6 50 ° C for fire treatment. The hardness of the test material obtained by the above treatment is 25 ~ 33 (shore hardness) °, and the machinability, embossing workability, repairability and grindability of the test material are evaluated. Tool Milling Cutting Test of Tools' End milling cutter cutting test using high speed tools, evaluated by tool life, machining rate and machining deformation (but only measuring the machining deformation of the milling cutter). The size of the test piece for the machinability test is 400 mm in length, 400 mm in width, and 150 mm in thickness. · Embossability is the etching of the test piece by applying an iron chloride aqueous solution to form a skin-like embossing pattern. * Evaluated by the presence or absence of embossed pattern spots. Also, the repairability of the welding is performed in accordance with J IS Z 3158 _ Y-shaped welding cracking test method. * Whether the test piece is cracked after welding is evaluated. Abrasiveness: The surface of the test piece was polished by hand to a mirror degree # 3 0 0 0, and evaluated by the presence or absence of mirror unevenness. Table 4, Table 5 show the test results of the steel of the present invention and comparative steel (including conventional steel). . Regarding embossing workability and abrasiveness, * is indicated when there are no pattern spots, and X is indicated when there are pattern spots. The weld repairability is represented by 0 when there is no crack, and X when it is cracked. This paper size applies to China National Standard (CNS) A4 (210X297 mm) (Please read the precautions on the back before r ^ this page). Packing.-Ordered by the Central Bureau of Standards of the Ministry of Economic Affairs, Printed by the Bayer Consumer Cooperative Γ , Β7 V. Description of the invention (is) Table 4 Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs for chipping, embossing, welding, refinishing, grinding, fin, repairing, repairing, and repairing. Tool life (wake) Cutting amount ratio) Processing No. Both port and pinch are pinched: 1¾¾ Grinding does not guarantee milling end mill end mill end mill (mm) crack average · 1 8,100 16,300 3.2 2.8 0.02 〇〇〇2 8,000 15,900 3.0 2.8 0.04 〇 〇〇3 7,1〇〇16,000 2.7 2.5 0.05 〇〇〇4 6,100 13,800 2.4 2.1 0.06 〇〇〇5 5,300 18,500 3.5 3.0 0.02 〇〇〇6 8,000 16,700 3.2 2.9 0.02 〇〇07 6,600 15,800 3.0 2.2 0.07 〇〇 〇8 6,700 16,900 3.2 2.6 0.03 〇〇09 6,200 17,100 3.1 2.5 0.05 〇〇〇10 6,900 17,400 2.9 2.8 0.03 〇〇11 7,200 17,000 2.9 2.6 0.02 〇 〇 • 〇12 7,700 16,100 3.3 2.6 0.02 〇00〇13 8,000 14,300 2.7 2.3 0.03 〇〇〇14 7,800 15,600 2.8 2.4 0.02 〇0015 7,700 16,200 2.9 2.9 0. 02 .〇00〇16 7,600 16,200 2.9 2.7 0.02 〇〇 〇17 7,900 15,800 3.0 2.6 0.02 〇00〇18 9,000 13,700 3.7 2.2 0.02 〇〇〇〇19,900 14,100 3.8 2.3 0.02 〇0020 9,200 14,300 3.6 2.2 0.02 〇0021 8,400 16,600 3.3 2.8 0.02 〇0022 8,700 15,800 3.2 2.4 0.02 〇〇〇〇 The paper size is applicable to China National Standard (CNS) A4 specification (210X297 mm) ---------- install-\ iy (Please read the precautions on the back before writing this page) )
-、1T 腺 —18 — 2 ο 2 A7B7 五、發明説明（l6) 表5 經濟部中央樣準局員工消費合作社印製 供 被削性 壓花 焊接補 研磨性 試 加工性 MriuL, Ί眵比 材 工具壽命(_) 加工能率(切削量比） 加工 No 變形 模樣斑 焊接破 研磨不 銑刀 端銑刀 銑刀 端銑刀 (mm) 裂 均 23 8,200 18, 700 3.6 3.0 0.03 〇 〇 X 24 4,800 18, 500 1.5 2.9 0.15 〇 X 〇 25 4,300 8,800 1.3 1.4 0.19 〇 〇 〇 26 8,400 18, 800 3.6 3.1 0.06 X X X 27 8,500 16,500 3.2 2.6 0.02 〇 〇 X 28 4,900 13, 300 1.7 1.6 0.06 X X 〇 29 5,100 15,500 2.2 1.7 0.03 X X 〇 30 4,500 16, 800 1.6 1.8 0.21 X X 〇 31 5,000 17, 200 2.4 2.2 0.04 X X 〇 32 4,800 16, 300 2.6 2.4 0.02 X X 〇 33 8,100 15, 900 3.0 2.7 0.04 X X X 34 8,800 17, 800 2.6 2.5 0.03 X X .X 35 5,300 9,700 1.9 1.7 0.08 〇 〇 〇 36 5,400 9, 600 1.8 1.5 0.04 〇 〇 •〇 37 4,900 10,400 2.0 1.8 0.07 〇 X X 38 8,200 15,100 2.9 2.0 0.02 〇 X 〇 39 9,300 14, 700 3.7 2.1 0.02 ·〇 X X 40 9, 200 14, 300 3.5 2.1 0.02 〇 X X 41 9,500 14, 600 3.8 2.2 0.02 〇 X X 42 8,000 17,500 3.1 2.8 0.02 〇 X X 43 8, 300 15, 800 3.3 2.4 0.02 〇 X X 44 1,990 7,100 *1.0 *1.0 0.31 〇 X 〇 45 1,200 5,800 0.8 0.8 0.38 〇 X 〇 注1 :*印基準值 ----------裝------訂---^腺. (請先閲讀背面之注意事項再Qr本頁) 本紙張尺度適用中國國家標準（CNS>A4規格（210X297公釐） -19 - 20720 A7 B7 經濟部中央標準局負費合作社印製 五、發明説明（π) 試驗結果，比較表4之本發明 試材No.44:S55C及No )如下所示•由表4得知本發明鋼 工具進行銑刀加工時爲6 2 0 0咖 端銑刀加工時爲1 3 5 0 Omm以上 20 0 0咖及7 1 0 0麵以下，明 ，加工能率係以供試材N 〇 . 4 4 J I S S55C相當材）當作1 工具進行銑刀加工時爲2.2倍以 端銑刀加工時爲2.2倍以上•在 鋼也比以往鋼更優異。關於使用超 加工材的加工變形，本發明鋼係對 0 . 0 7咖以下，而以往鋼則爲0 之極大的數值。對於其他特性，本 加工性，焊接修補性及研磨性完全 焊接修捕性差。因此，本發明鋼的 確實比以往鋼儍異。 又，對於本發明鋼之化學組成 外的比較鋼（供試材N 〇 · 2 3〜 。比較鋼僅係一部分的元素在本發 如表5所示，在比較鋼中也能看到 性（工具壽命，加工能率，加工變 接修補性及硏磨性·但這些所有的 鋼的供試材。特別是S i含量低的 鋼與表5 .45: 的工具壽 以上，以 。而以往 顯地本發 的以往鋼 ，本發明 上，以高 加工能率 硬工具切 於長度4 .3 1 nun 發明鋼之 沒有問題 被削性及 之以往 S C Μ 命在使 高速工 鋼分別 明鋼較 ( 鋼在使 速鋼工 方面， 削加工 〇 0 mm 及0 · 供試材 ，但以 其他上 鋼（供 4 4 0 用超硬 具進行 爲低於 長。又 用超硬 具進行 本發明 後之被 爲 3 8 mm 在壓花 往鋼的 述特性 之一部分元素爲範圍以 4 3 )的試驗結果如下 明鋼的範圍外。因此， 與本發明鋼相近的被削 形），壓花加工性，焊 特性值並非一般本發明 供試材N 〇 . 2 5在被 請 先 閲 % 背 之 注 意 事 項 再/ 裝 訂 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐）-, 1T gland — 18 — 2 ο 2 A7B7 V. Description of the invention (l6) Table 5 Printed by the Consumer Cooperatives of the Central Procurement Bureau of the Ministry of Economic Affairs for cutting, embossing, welding, repair, abrasiveness, trial workability, MriuL, Ί 眵Tool life (_) Machining rate (cutting ratio) Machining No Deformation spot Welding Broken grinding No milling cutter End milling cutter End milling cutter (mm) Crack average 23 8,200 18, 700 3.6 3.0 0.03 〇〇X 24 4,800 18 , 500 1.5 2.9 0.15 〇X 〇25 4,300 8,800 1.3 1.4 0.19 〇00〇26 8,400 18, 800 3.6 3.1 0.06 XXX 27 8,500 16,500 3.2 2.6 0.02 〇X 28 4,900 13, 300 1.7 1.6 0.06 XX 〇29 5,100 15,500 2.2 1.7 0.03 XX 〇30 4,500 16, 800 1.6 1.8 0.21 XX 〇31 5,000 17, 200 2.4 2.2 0.04 XX 〇32 4,800 16, 300 2.6 2.4 0.02 XX 〇33 8,100 15, 900 3.0 2.7 0.04 XXX 34 8,800 17, 800 2.6 2.5 0.03 XX .X 35 5,300 9,700 1.9 1.7 0.08 〇〇〇36 5,400 9,600 1.8 1.5 0.04 〇〇〇〇 4,37 10,400 2.0 1.8 1.8 0.07 〇XX 38 8,200 15,100 2.9 2.0 0.02 〇X 〇 39 9,300 14, 700 3.7 2.1 0.02 × XX 40 9, 200 14, 300 3.5 2.1 0.02 〇XX 41 9,500 14, 600 3.8 2.2 0.02 〇XX 42 8,000 17,500 3.1 2.8 0.02 XX 43 8, 300 15, 800 3.3 2.4 0.02 〇XX 44 1,990 7,100 * 1.0 * 1.0 0.31 〇X 〇45 1,200 5,800 0.8 0.8 0.38 〇X 〇Note 1: * Printing reference value ---------- installation ------ order-- -^ GF. (Please read the notes on the back before Qr page) This paper size applies to Chinese national standard (CNS > A4 size (210X297 mm) -19-20720 A7 B7 Printed by the Central Standards Bureau of the Ministry of Economic Affairs V. Explanation of the invention (π) The test results are compared with the samples No.44: S55C and No of the present invention in Table 4) as shown below: • Table 4 shows that the steel tool of the present invention is 6 2 0 0 coffee The end mill is from 1 350 mm to 2 0 0 coffee and 7 1 0 surface. It is clear that the processing energy rate is based on the test material N 0.44 equivalent to JIS S55C) as a tool for milling 2.2 times during machining and 2.2 times or more during end milling. • Steel is also superior to conventional steel. Regarding the processing deformation using a super-machined material, the steel of the present invention has a maximum value of 0 to 0.7 coffee, while the conventional steel has a very large value of 0. For other characteristics, the workability, weld repairability, and abrasiveness are poor. Therefore, the steel of the present invention is indeed weirder than the conventional steel. In addition, for comparative steels other than the chemical composition of the steel of the present invention (for test materials No. 2 3 to 3). Only a part of the elements of the comparative steel are shown in Table 5 in the present invention. Tool life, processing power, processing repairability and honing. But all these steels are tested materials. Especially the steel with low Si content and Table 5.45: Tool life or more. In the conventional steel of the present invention, in the present invention, a hard tool is used to cut the length of 4. 3 1 nun. The invention steel has no problem of machinability and the conventional SC MM is designed to make high-speed steel In terms of making super steel, it cuts 0,0 mm and 0, which is the test material, but other steels (for 4 4 0 are made with a superhard tool to be less than long. After using the superhard tool to perform the present invention, It is 3 8 mm. Part of the characteristics of the embossed steel is in the range of 4 3). The test results are as follows. The range of the Ming steel is as follows. Therefore, it is cut similar to the steel of the present invention.), Embossability, welding The characteristic value is not the general test material N. 2 5 of the present invention. % CAUTIONS back the re / paper stapled this scale applicable Chinese National Standard (CNS) A4 size (210X297 mm)
經濟部中央標準局貝工消費合作社印製 五、發明説明（18) 削性之工具壽命，加工能率及加工變形各方面比本發明鋼 差· 如上述，本發明之塑膠成形塑模用鋼之被削性，壓花 加工性，焊接修捕性（焊接性）及研磨性皆非常優異，具 有比以往鋼及比較鋼更好的特性。 本發明之塑膠成形塑模用鋼之工具壽命，加工能率等 的被削性優異’切削加工後之被加工材的加工變形少。而 且，壓花加工性，焊接修捕性（焊接性），研磨性等特性 良好。使用本發明鋼提高工具壽命，可降低工具費用及切 削加工無人化，提高加工能率縮短加工時間，特別是縮短 塑模製作時間•加工變形輕微也可省略研磨步驟縮短製作 塑模的日數•因此*本發明之塑膠成形塑模用鋼可降低塑 模的製作費用及縮短製作工時’而且’壓花加工性，焊接 修補性（焊接性）’研磨性優異· 如上述，本發明之塑膠成形塑模用鋼及塑膠的成形方 法可發揮塑膠成形加工的儸異效果· 本紙張尺度適用中國國家標準（CNS ) A4規格（210X29*7公釐） 言 (請先閱讀背面之注意事項再r-弯本頁)Printed by the Central Bureau of Standards, Ministry of Economic Affairs, Shellfish Consumer Cooperative, V. Description of the invention (18) The tool life, processing energy rate, and processing deformation of the machinable tool are inferior to the steel of the present invention. It has excellent machinability, embossability, weldability (weldability) and abrasiveness, and has better characteristics than conventional steels and comparative steels. The tool forming steel of the present invention is excellent in machinability such as tool life, machining efficiency, and the like, and the machining material after machining is less deformed. In addition, embossability, weldability (weldability), and abrasiveness are good. Using the steel of the present invention to improve tool life can reduce tool costs and unmanned cutting, improve processing efficiency and shorten processing time, especially shorten mold making time. • Slight processing deformation can also omit the grinding step and shorten the number of days to make the mold. • Therefore * The steel for plastic molding of the present invention can reduce the production cost of molds and shorten the production time. Moreover, it has excellent embossability, weldability (weldability), and abrasiveness. As described above, the plastic molding of the present invention Molding steel and plastic forming methods can exert the amazing effect of plastic forming processing. This paper size is applicable to China National Standard (CNS) A4 specification (210X29 * 7 mm). (Please read the precautions on the back before r- (Bend this page)
-21 --twenty one -