1279446 九、發明說明： 【發明所屬之技術領域】 - 本發明係有關藉由塑性加工以製造由鎂基合金所構成 _ 之成形體時所使用的方法。特別是將進行塑性加工之際的 ~ 加工溫度更加降低並生產性佳地製造鎂基合金的成形體的 ▲ 製造方法。 【先前技術】 鎂基合金係比鋁爲輕，在強度、剛性上也比鋼及鋁更 爲優異，亦被廣泛地使用在飛機零件、汽車零件等之其他 φ 、各種電氣製品的機體。 但是，Mg以及其合金，由於是六方密格子（hep)構造 ’其延性差，塑性加工性極爲不佳，但雖然如此，鎂基合 金則廣爲已知於加工之際，藉由提昇加工溫度，其加工性 將會變得良好。例如在日本專利公報特開2000-28 3 1 34號 公報、特開2000-343 1 7 8號公報之中，記載著將鎂基合金 加熱至超塑性現象會展現的溫度狀態，再螺絲加工的技術 但是，在將鎂基合金予以塑性加工之情形中，由於產 生上述超塑現象的溫度乃是在25 (TC以之上高溫，若是以習 知方法，則將會產生無法高生產性地製造藉由塑性加工所 完成之成形體之問題。 卜 習知，在爲了得到由鎂基合金所構成之成形體，而進 、 行塑性加工之類的強加工之情形中，也兼有依其加工度之 需要’而有必要將被加工材料之鎂基合金的擠製材料以及 1279446 輥軋材料加熱至25 0°C以上來加工。 因此之故，不僅需要2 5 0 °C以上之高溫用加熱設備’而 且使用在塑性加工之金屬模具、滾筒等之加工材料也由於 曝露於高溫之下所以使用壽命變短，招致成本上升。因此 ，2 5 0 °C以上之加熱，於工業性的生產上絕對是不利的。 在此，本發明的主要目的爲提供一種鎂基合金成形體 之製造方法，其可高生產性地製造由鎂基合金所構成的塑 性加工成形體。 【發明內容】 本發明者們對於通常在塑性加工之強加工上有困難的 鎂基合金，做過各種檢討後，發現藉由使用在事先施以特 定的拉製加工之鎂基合金材料，即使是於不到250°C的溫度 下，也可以進行塑性加工，最後完成了本發明。 也就是說，本發明鎂基合金成形體的製造方法的特徵 爲將藉由拉製加工所得到的鎂基合金所構成的線條體於加 工溫度不到2 5 0 °C下，予以塑性加工。 以往’將鎂基合金塑性加工以得到成形體之情形中， 被加工材料通常是使用擠製材料或是輥軋材料。但是，以 擠製材料或是輥軋材料而言，在進行塑性加工之時，必要 將溫度加熱到25〇°C以上，但是現殷切盼望能降低加工溫度 。在此’本發明係不使用濟製材料或是輥軋材料，而是藉 著使用藉由拉製加工所得到的線條體，可以實現加工溫度 的降低，亦即，實現了於不到25(TC，特別是於200°C以下 的塑性加工。如此般，藉由使用經拉製加工的線條體，將 1279446 進行塑性加工之際的溫度降低到不到250°C，變成不需要以 往般之高溫用的加熱手段，也可以加長塑性加工中所使用 的金屬模具以及滾筒等的加工材料的使用壽命，而可以提 高生產性。以下，更加詳細地說明本發明。 於本發明中，舉由鎂基合金所構成的線條體而言，例 如可舉例：金屬線（線狀體）、棒狀體、管等。其剖面即可 以爲圓形，亦可以爲矩形以及橢圓狀等之非圓形狀，即可 以爲異種形狀。 於本發明中拉製加工，例如在欲得到金屬線或是棒狀 體之情形中，加熱至加工溫度的昇溫速度：It/seed 00 °C/sec ;加工溫度：50°C以上200°C以下（更佳爲150°C以下）；加 工度：對於每一次輥道通過之拉製加工爲1 0 %以上；運轉 速度：於lm/sec以上之速度下將擠製材料或是輥軋材料予 以拉製。例如欲得到管的情形，拉製溫度：50它以上3 00t： 以下（更佳爲100°C以上200°C以下，又更佳爲lOOt：以上 15 0°C以下）；加工度：對於拉製加工一次爲5%以上（更佳爲 10%以上，特佳爲20%以上），加熱至加工溫度的昇溫速度 :l°C/sec〜l〇〇°C/sec;拉製速度：於lm/sec以上之速度下 將擠製材料或是輥軋材料予以拉製。藉由這樣特定的拉製 加工’可以使合金組織微細化，具體而言，可以使平均結 晶粒徑變成在1 0 # m以下。而且，本發明藉由上述合金組 成之微細化，即使將加熱溫度設定在不到25 0°C也可以提高 塑性加工性，而可以得到所希望的成形體。還有，於拉製 加工後’亦可將所得到的線條體於1 〇 〇 °C以上3 〇 〇 °C以下， 1279446 更佳爲於1 5 0 °c以上3 Ο 0 °C以下的溫度下予以加熱。這樣加 熱退火，對於促進因拉製加工而產生的應變的回復非常有 效，對於由促進再結晶的促進所導致的結晶粒更微細化也 是有窣的。該加熱溫度的保持時間以5〜2〇分鐘左右爲佳。 於本發明中，舉塑性加工的例子而言，例如鍛造加工 、型鍛加工，彎曲加工等。進行塑性加工之鍛造加工之時 ，以下述的溫度條件較爲適當。亦即，當軋縮率爲h %，加 工溫度爲T°C時，T必需滿足31^ + 150〉T-SrJIOC但其中， 2 0°/〇Sri<8 0%，T<2 5 0°C)。舉例而言，當軋縮率 ^ = 20(%)之 時，加熱溫度T(°C)則可以設定爲不到250°C，特別是設定 在7 〇 °C以上不到2 1 0 °C。在對未進行拉製加工的擠製材料以 及輥軋材料進行軋縮率爲20%之鍛造加工之時，如果不加 熱到2 1 0°C以上的高溫，則會產生裂紋而無法進行鍛造加工 。另一方面，如果加熱到上述般的高溫的話，則金屬模具 以及滾筒的使用壽命會變短。相對於此，本發明藉著使用 拉製材料，以藉此得到之合金組織之細微化效果，可以使 得軋縮率20 %的鍛造加工之加熱溫度設定在不到21 0°C，可 以更加增長金屬模具以及滾筒的使用壽命。在進行軋縮率q 爲超過3 3 %之加工之情形中，加熱溫度的下限爲以上述 3^ + 10所求得的値，加熱溫度的上限則爲考慮到金屬模具 以及滾筒等之使用壽命，應設定在不到25 0°C。因此，在本 發明，欲進行於工業上有效的加工軋縮率超過40%之塑性 加工，即使加工溫度未達2 5 (TC，也可以充分地實施鍛造加 工。而在乳縮率爲8 0 %以上的強加工之中，則最好能加熱 1279446 至2 5 0 °C以上。 在進行塑性加工的型鍛加工之情形中，則以下述的溫 度條件較爲適當。亦即，當斷面減少率爲r2 %，加工溫度爲 T°C時，T 必需滿足 3r2+150> T$3r2-3 0(但其中，20°/〇€r2S 80% ，T<2 5 0 °C)。例如，當斷面減少率r2 = 20%之時，則加熱溫 度可以設定爲不到2 5 0 °C，特別是設定在3 0 °C以上未達 2 1 0 °C。因此，比起習知之在斷面減少率爲2 0 %之情形，其 使用未施以拉製加工的擠製材料以及輥軋材料，便必需加 熱到2 1 0 °C之習知方法，使用本發明合金組織較爲微細的拉 製材料，可以更加延長金屬模具以及滾筒的使用壽命。當 將斷面減少率r2設定在超過3 3 %的情形中，加熱溫度的下 限爲以上述3r2-30所求得的値，加熱溫度的上限則爲考慮 到金屬模具以及滾筒等之使用壽命，應設定在不到25(TC。 使用本發明合金組織較爲微細的拉製材料，於被當作工業 上有效的加工的斷面減少率超過40%的加工中，可以在不 到25 0°C的加工溫度之下，進行型鍛加工。而在斷面減少率 爲超過80%的強加工之中，則最好能加熱至25 0°C以上。 在進行塑性加工的彎曲加工之情形中，則以下述的溫 度條件較爲適當。亦即，當彎曲之際線條體的厚度爲t mm ，彎曲半徑爲Rmm，而加工溫度爲T°C時，T爲（1)當〇· 1 SR/t値S 1·0時，貝〇 Τ的範圍可爲25 0> T- 2 5 0-2 5 0 R/t値 ;(2)當 1.0<R/t 値 $ 1.9 時，貝U T 的範圍可爲 5 00-25 0R/t 値2T〉0 ; (3)當1.9<R/t値S2.0時，貝[j Τ的範圍可爲252 T>0。例如彎曲半徑R和線條體的厚度爲t之比値R/t値爲 1279446 1 .0〜1 .9之情形中，加熱溫度T(°c)爲不到250°C。特別是可 以將上限設在500-2 5 0 R/t値以下。亦即’由後述的試驗結 果，可以知道的是，可以將加熱溫設定爲不到1 〇〇°C，甚至 於室溫左右（例如2 0°C)。還有，當R/t値爲1.9〜2.0之情形 中，可以將加熱溫度T(°C)設定在25°C以下。在使用未經施 加拉製加工之擠製材料以及輥乳材料之習知方法之中，R/t 値爲1.0〜2.0的彎曲加工，特別是在進行R/t値爲1.5〜1.0 左右的彎曲加工之情形中，加熱是必須的。相對於此，本 發明中，藉由使用拉製材料，以藉此得到的微細的結晶粒 的效果，於R/t値爲1.0〜2.0的彎曲加工中，即使不進行加 熱，也可以充分地進行彎曲加工，亦可以不要採用加熱設 備。還有，由於不進行加熱的關係，更可以謀求金屬模具 等之加工材料的使用壽命延長。另一方面，於R/t値爲不 到1 .〇之強加工之情形中，加熱溫度的下限爲以上述2 5 0- 2 5 OR/t之式子所求得的値，加熱溫度的上限則應該考慮金 屬模具等的壽命，訂在不到25 0°C。在使用擠製材料之習知 的方法之中，在R/t値爲1 · 2以下的強加工而言，必須要加 熱到2 0 0 °C以上，特別是R/t値爲1 · 〇以下的強加工之情形 中，必需要加熱到2 5 0 °C以上。相對於此，在本發明之中， 藉由使用合金組織爲細微的拉製材料，即使是在R /1値爲 0.1〜1.0那樣的強力□工，力□工溫度即使未達250°c，也可以 充分地進行彎曲加工。 上述線條體的厚，如果是線條體爲金屬線（線狀體）之 情形以及其爲棒狀體且剖面形狀爲矩形之情形中，其厚就 -10- 1279446 等於其厚度，如果是線條體爲管狀的情形：其厚便是外徑 和內徑的差。 還有，R/t値爲超過2 · 〇之情形而言，其彎曲加工的程 度較低，由於即使是擠製材料或是輥軋材料也可以於常溫 下進行加工，所以在本發明之中不予以限定。還有，於R/t 値爲不滿〇 · 1之強加工而言，由於必須期望能夠加熱到超 過225 °c ’在考慮金屬模具等的加工材料的壽命之下，在本 發明之中，並不予以限定。 本發明係不論合金組成，於在室溫左右（例如：2 0 °C )加 工性很差劣、具有hep構造的鎂基合金是有效的。例如可 以利用鍛造用鎂基合金以及延展用鎂基合金。具體而言， 可以舉含有A1在0.1重量％以上12重量％以下者，以及含 有Zn在0.1重量％以上10重量％以下以及含有Zr在0.1重 量％以上2.0重量％以下者。在含有A1之情形中，更進而 含有一種以上選自下列族群者：：Mn: 0.1重量％以上2.0重 量％以下；Ζη:0·1重量％以上5.0重量％以下；Si:0.1重量％ 以上5.0重量％以下。就上述的合金組成而言，可以使用於 代表性AS TM記號中的AZ系、AS系、AM系、ZK系等。 以A1含有量而言，可以區分以重量％而言未滿〇·1〜2.0 %者 ，以及超過2.0〜12.0%者。除了上述的化學成分以外’一般 是作爲含有M g以及雜質的合金來利用。雜質如F e、S i、C u 、Ni 、 Ca 等。 於AZ系中舉A1含量爲2.0〜12.0重量％者的例子而言 ，例如ΑΖ31、ΑΖ61、ΑΖ91等。ΑΖ31乃是例如以重量％而 1279446 言係含有 a1:2 5〜3 5%、Zn:() 5〜1 5%、5%、 Cικ0·05%以下、Si:〇 1%以下、Ca:〇 〇4%以下之鎂基合金。 AZ61乃是例如以重量％而言係含有 A1:5.5〜7 2%、 Ζη··0·4〜1.5%、Mn:〇 15〜〇 35%、Ni:〇 〇5%以下、^ 〇 以以 下之鎂基合金。AZ91乃是例如以重量％而言係含有 Α1:8·1 〜9.7%、Zn:0.35 〜1.0%、Μη:0·13%以上、Cu:() 1%以1279446 IX. Description of the Invention: TECHNICAL FIELD OF THE INVENTION The present invention relates to a method for producing a molded body composed of a magnesium-based alloy by plastic working. In particular, the ▲ manufacturing method of producing a molded body of a magnesium-based alloy by further reducing the processing temperature at the time of plastic working. [Prior Art] Magnesium-based alloys are lighter than aluminum and are superior in strength and rigidity to steel and aluminum. They are also widely used in other parts of φ and various electrical products such as aircraft parts and automotive parts. However, Mg and its alloys have a poor ductility and poor plastic workability because of their hexagonal dense hep structure. However, magnesium-based alloys are widely known to be processed at elevated temperatures. , its processability will become good. For example, in the Japanese Patent Publication No. 2000-28 3 1 34 and JP-A-2000-343 177, it is described that the magnesium-based alloy is heated to a temperature state which is exhibited by a superplastic phenomenon, and is further processed by a screw. However, in the case of plastically processing a magnesium-based alloy, the temperature at which the above superplastic phenomenon occurs is at a high temperature of 25 (TC or higher), and if it is a conventional method, it will be produced without high productivity. The problem of the formed body by plastic working. It is known that in the case of obtaining a molded body composed of a magnesium-based alloy and performing a strong processing such as plastic working, it also has a degree of workability. It is necessary to process the magnesium-based alloy extruded material of the material to be processed and the 1279446 rolled material to a temperature above 25 °C for processing. Therefore, it is necessary to use not only a heating device for high temperature of 250 °C or higher. Moreover, the processing materials such as metal molds and rollers used in plastic working are also exposed to high temperatures, so the service life is shortened, resulting in an increase in cost. Therefore, heating at temperatures above 250 °C is required. Here, the main object of the present invention is to provide a method for producing a magnesium-based alloy formed body which can produce a plastically formed molded body composed of a magnesium-based alloy with high productivity. The inventors of the present invention have made various reviews on magnesium-based alloys which are often difficult to process in plastic processing, and found that by using a magnesium-based alloy material which has been subjected to a specific drawing process in advance, even The plastic working can be carried out at a temperature of less than 250 ° C, and finally the present invention has been completed. That is, the method for producing a magnesium-based alloy formed body of the present invention is characterized by a magnesium-based alloy obtained by drawing. The formed body is plastically processed at a processing temperature of less than 250 ° C. In the past, in the case of plastically processing a magnesium-based alloy to obtain a shaped body, the material to be processed is usually extruded or rolled. Material. However, in the case of extruded materials or rolled materials, it is necessary to heat the temperature to above 25 °C when plastic processing is performed, but it is eager to reduce the addition. In the present invention, the invention does not use a metal material or a rolled material, but by using a line body obtained by drawing, the processing temperature can be lowered, that is, it can be achieved. 25 (TC, especially plastic working below 200 ° C. In this way, by using the drawn line body, the temperature of the plastic processing of 1279446 is reduced to less than 250 ° C, becoming unnecessary The heating means for high temperature can also increase the service life of the metal mold and the processing material such as the drum used in the plastic working, and the productivity can be improved. Hereinafter, the present invention will be described in more detail. Examples of the linear body composed of the magnesium-based alloy include a metal wire (linear body), a rod-shaped body, a tube, and the like. The cross section may be a circular shape, or may be a non-circular shape such as a rectangle or an ellipse, and may be a heterogeneous shape. In the present invention, the drawing process is performed, for example, in the case where a metal wire or a rod body is to be obtained, the heating rate is increased to a processing temperature: It/seed 00 ° C/sec; and the processing temperature is 50 ° C or more and 200 ° C. The following (more preferably 150 ° C or less); processing degree: for each roller pass through the drawing process is more than 10%; operating speed: at or above lm / sec will be extruded material or rolled material Pull it out. For example, in the case of obtaining a tube, the drawing temperature is 50 or more and 300 rpm or less (more preferably 100 ° C or more and 200 ° C or less, and more preferably lOOt: 15 0 ° C or less); processing degree: for pulling The processing time is 5% or more (more preferably 10% or more, particularly preferably 20% or more), and the heating rate is heated to the processing temperature: l ° C / sec to l 〇〇 ° C / sec; drawing speed: Extruded or rolled material is drawn at speeds above lm/sec. The alloy structure can be made fine by such a specific drawing process. Specifically, the average crystal grain size can be made 10 or less. Further, according to the present invention, the composition of the above-mentioned alloy can be made fine, and even if the heating temperature is set to less than 260 °C, the plastic workability can be improved, and a desired molded body can be obtained. In addition, after drawing, 'the obtained line body can be below 1 〇〇 ° C and below 3 〇〇 ° C, 1279446 is better than 1 50 °c above 3 Ο 0 ° C below the temperature. Heat it underneath. Such thermal annealing is very effective in promoting recovery of strain due to drawing processing, and is also conducive to refinement of crystal grains caused by promotion of promotion of recrystallization. The holding time of the heating temperature is preferably about 5 to 2 minutes. In the present invention, examples of the plastic working are, for example, forging processing, swaging processing, bending processing, and the like. When the forging process of plastic working is performed, the following temperature conditions are suitable. That is, when the rolling reduction ratio is h% and the processing temperature is T°C, T must satisfy 31^ + 150>T-SrJIOC but wherein, 2 0°/〇Sri<80%, T<2 5 0° C). For example, when the rolling reduction ratio is ^ 20 (%), the heating temperature T (°C) can be set to less than 250 ° C, especially less than 2 0 ° C above 7 0 ° C. . When the extruded material and the rolled material which are not subjected to drawing are subjected to a forging process at a rolling reduction ratio of 20%, if the temperature is not heated to a temperature higher than 210 ° C, cracks may occur and forging processing may not be performed. . On the other hand, if it is heated to the above-mentioned high temperature, the service life of the metal mold and the drum becomes short. On the other hand, the present invention can increase the heating temperature of the forging process with a rolling reduction of 20% by setting the heating temperature of the alloy structure obtained by using the drawn material by 20%. The service life of metal molds and rollers. In the case of processing in which the rolling reduction ratio q is more than 3%, the lower limit of the heating temperature is 値 obtained by the above 3^ + 10, and the upper limit of the heating temperature is taken into consideration for the service life of the metal mold, the drum, and the like. Should be set at less than 25 °C. Therefore, in the present invention, it is desired to carry out industrial processing, and the plastic working rate of the rolling reduction ratio exceeds 40%, and even if the processing temperature is less than 25 (TC, the forging process can be sufficiently performed. In the case of strong processing of more than %, it is preferable to heat 1279446 to 250 °C or more. In the case of swaging for plastic working, the following temperature conditions are appropriate. The reduction rate is r2 %, and when the processing temperature is T °C, T must satisfy 3r2+150> T$3r2-3 0 (but 20°/〇€r2S 80%, T<25°C). When the reduction rate of the section is r2 = 20%, the heating temperature can be set to less than 250 °C, especially if it is set above 30 °C and not more than 2 1 0 °C. Therefore, compared with the conventional ones In the case where the reduction ratio of the section is 20%, it is necessary to use a conventional method of heating to 210 ° C using an extruded material which is not subjected to drawing processing and a rolled material, and the alloy structure of the present invention is used. The fine drawn material can extend the service life of the metal mold and the drum. When the section reduction rate r2 is set to more than 33% In the case, the lower limit of the heating temperature is 値 obtained by the above 3r2-30, and the upper limit of the heating temperature is set to be less than 25 (TC) in consideration of the service life of the metal mold and the drum, etc. Using the alloy structure of the present invention The finer drawn material can be swaged at a processing temperature of less than 25 °C in a process that is considered to be an industrially effective process with a reduction rate of more than 40%. In the case of strong processing in which the reduction rate of the cross section is more than 80%, it is preferable to heat it to 25 ° C or higher. In the case of bending processing for plastic working, the following temperature conditions are appropriate. When bending, the thickness of the line body is t mm, the bending radius is Rmm, and when the processing temperature is T°C, T is (1) when 〇· 1 SR/t値S 1·0, the range of the shellfish It can be 25 0> T- 2 5 0-2 5 0 R/t値; (2) When 1.0 < R / t 値 $ 1.9, the range of the shell UT can be 5 00-25 0R / t 値 2T> 0; (3) When 1.9 < R / t 値 S2.0, the range of shell [j Τ can be 252 T > 0. For example, the ratio of the bending radius R and the thickness of the line body to t 値 R / t 値 is 1279446 1 .0 to 1. 9 In the form, the heating temperature T (°c) is less than 250° C. In particular, the upper limit may be set to be less than 500 to 2 5 R/t 。. That is, 'by the test results described later, it can be known that Set the heating temperature to less than 1 〇〇 ° C, even around room temperature (for example, 20 ° C.) Also, when R / t 値 is 1.9 ~ 2.0, the heating temperature T ( ° C can be ) Set below 25 °C. Among the conventional methods of using the extruded material and the roll material which are not subjected to drawing, the R/t 値 is a bending process of 1.0 to 2.0, particularly in the case where the R/t 値 is about 1.5 to 1.0. In the case of processing, heating is necessary. On the other hand, in the present invention, the effect of the fine crystal grains obtained by using the drawn material can be sufficiently obtained in the bending process in which R/t 値 is 1.0 to 2.0 without heating. It is also possible to use a heating device for bending. Further, since the heating is not performed, it is possible to extend the service life of the processed material such as a metal mold. On the other hand, in the case where R/t値 is less than 1. In the case of strong processing, the lower limit of the heating temperature is enthalpy obtained by the above formula of 2 5 0 - 2 5 OR/t, and the heating temperature is The upper limit should consider the life of the metal mold, etc., and set it at less than 25 °C. Among the conventional methods of using extruded materials, in the case of strong processing having an R/t 値 of 1.2 or less, it is necessary to heat up to 200 ° C or more, especially R/t 値 is 1 · 〇 In the case of the following strong processing, it is necessary to heat to above 250 °C. On the other hand, in the present invention, by using the alloy structure as a fine drawn material, even if the R /1 値 is 0.1 to 1.0, the force working temperature is less than 250 ° C, It is also possible to perform the bending process sufficiently. The thickness of the above-mentioned line body is in the case where the line body is a metal wire (linear body) and the case where the line body is a rod-shaped body and the cross-sectional shape is a rectangle, the thickness of the line body is -10- 1279446 equal to the thickness thereof, and if it is a line body In the case of a tube: its thickness is the difference between the outer diameter and the inner diameter. Further, in the case where R/t値 is more than 2·〇, the degree of bending processing is low, and even if it is an extruded material or a rolled material, it can be processed at normal temperature, so in the present invention Not limited. In addition, in the case where R/t 値 is a strong processing of 不·1, it is necessary to be able to heat up to more than 225 ° C. In consideration of the life of a processed material such as a metal mold, in the present invention, Not limited. The present invention is effective in a magnesium-based alloy having a hep structure which is inferior in workability at room temperature (e.g., 20 ° C) regardless of the alloy composition. For example, a magnesium-based alloy for forging and a magnesium-based alloy for stretching can be utilized. Specifically, it is preferable that A1 is 0.1% by weight or more and 12% by weight or less, and Zn is 0.1% by weight or more and 10% by weight or less, and Zr is 0.1% by weight or more and 2.0% by weight or less. In the case of containing A1, one or more selected from the group consisting of: Mn: 0.1% by weight or more and 2.0% by weight or less; Ζη: 0.1% by weight or more and 5.0% by weight or less; Si: 0.1% by weight or more and 5.0 or more Below weight%. The above alloy composition can be used for the AZ system, the AS system, the AM system, the ZK system or the like in the representative AS TM symbol. In terms of the A1 content, it can be distinguished from those which are less than 〇1 to 2.0% by weight%, and more than 2.0 to 12.0%. In addition to the above chemical components, it is generally used as an alloy containing Mg and impurities. Impurities such as F e, S i, C u , Ni, Ca, and the like. Examples of the AZ system in which the A1 content is 2.0 to 12.0% by weight are, for example, ΑΖ31, ΑΖ61, ΑΖ91 and the like. ΑΖ31 is, for example, 1% by weight and 1279446, a1: 2 5 to 35%, Zn: () 5 to 1 5%, 5%, C1K0. 05% or less, Si: 〇 1% or less, Ca: 〇镁4% or less of magnesium-based alloy. AZ61 is, for example, contained A1: 5.5 to 7 2%, Ζη··0·4 to 1.5%, Mn: 〇15 to 〇35%, Ni: 〇〇5% or less, and 〇 to 5% by weight. Magnesium based alloy. AZ91 is, for example, Α1:8·1 to 9.7%, Zn:0.35 to 1.0%, Μη:0·13% or more, and Cu:() 1% in terms of % by weight.
下、Ni:0.03%以下、以：〇.5%以下之鎂基合金。於Az系中 舉A1 a里爲0.1〜2.0重量°/〇未滿者的例子而言，例如A z i 〇 、AZ21等。AZ10係爲例如以重量％而言係含有a1:1〇〜15% 、Ζη·0·2 〜0.6%、Μη:0·2% 以上、C!u:0.1%以下、以 下、Ca:0.4%以下之鎂基合金。AZ21乃是例如以重量％而言 係含有八1:1.4〜2.6%、211:0.5〜1.5%、]\/111:0.15〜0.35%、>^:0.03% 以下、Si:0.1%以下之鎂基合金。Next, Ni: 0.03% or less, and a magnesium-based alloy of 5% or less. In the Az system, for example, in the case where A1 a is 0.1 to 2.0 wt%/〇, for example, A z i 〇 , AZ 21 or the like. The AZ10 system contains, for example, a1:1〇15%, Ζη·0·2 to 0.6%, Μη:0·2% or more, C!u: 0.1% or less, and below, Ca: 0.4% by weight%. The following magnesium-based alloys. AZ21 is, for example, contained in an amount of 8%: 1.4 to 2.6%, 211: 0.5 to 1.5%, ]\/111: 0.15 to 0.35%, >^: 0.03% or less, and Si: 0.1% or less. Magnesium based alloy.
於AS系中舉A1含量爲2.0〜12.0重量。/〇者的例子而言 ，例如 AS 41等。AS41乃是例如以重量％而言係含有 Α1:3·7 〜4·8%、Ζη:0·1% 以下、Cu:0.15% 以下、Μη:0·35 〜0.60% 、Ni:0.001%以下、Si:0.6〜1.4%之鎂基合金。於AS系中舉 A1含量爲0.1〜2.0重量％未滿者的例子而言，例如AS21等 。A S21乃是例如以重量％而言係含有AL 1.4〜2.6%、Zn ··0·：! % 以下、C u : 0 · 1 5 % 以下、Μ η : 0 · 3 5 〜0 · 6 0 %、N i: 0 · 0 0 1 %、 Si:0.6〜1.4%之鎂基合金。 在AM系之中，例如AM60、AM100等。AM60乃是例 如以重量°/〇而言係含有 A1: 5 . 5〜6 · 5 %、Ζ η : 0 · 2 2 %以下、 Cu:0.35%以下、Μη:0·13%以上、Ni:0.03%以下、Si:0.5% 以 -12- 1279446 下之鎂基合金。AM 10 0乃是例如以重量％而言係含有 Α1:9·3 〜10.7%、Ζη:0·3%以下、CuiO.l%以下、Μη:0·1 〜0.35% ^ 、Ni:〇.〇1%以下、si:〇 3%以下之鎂基合金。 『 以ZK系而言，例如ZK40、ZK60等。ZK40乃是例如 以重量％而言係含有Zn:3.5〜4.5%、Zr:0.45%以上之鎂基合 · 金。ZK 60乃是例如以重量％而言係含有Ζη:4·8〜6.2%、 Ζγ:0·45%以上之鎂基合金。 以鎂單体來說，很難得到充分的強度，不過藉由含有 上述化學成分可以得到較佳的強度。 馨 本發明是藉由將線條體塑性加工所得到的成形體，其 適用於：例如眼鏡框或是可攜式電子機器等的補強用框、 或者是適用於螺絲等之製造。 【實施方式】 以下，說明本發明之實施形態。 (實施例1) 準備以重量％而言含有 A1: 3.0 %、Ζ η : 1 . 0 %、Μ η : 0.1 5 %， 其餘部分爲由Mg以及雜質所構成之鎂基合金（相當於ASTM · 記號 AZ31 之材料）的擠製材料（0)4.0mm、（D3.0mm)。Φ4.0πιπι 的擠製材料先經過於約160°C的溫度，以及每一輥道行程後 的斷面減少率爲20%以下的加工度施行拉製加工至Φ3·0ιηιη 爲止（昇溫至160°C的昇溫速度：約l〇°C/sec、運轉速度： 16m/sec)。還有拉製加工後施以3 5 0 °Cx 15min的熱處理， · 除去拉製時的應變，進行藉由再結晶所達成之組織的均一 細微化。 -13- 1279446 將所得到的Φ 3 · Omm拉製材料以及未進行拉製之φ 3 · 0 m m的擠製材料分別切斷爲3 m m長，做爲試驗片。對此 等試驗片於各種軋縮率沿線軸方向施以鍛造加工。此時在 1 00 °C〜2 5 0 °C的範圍之下，於各種溫度下加熱各試驗片進行 鍛造加工。然後’調查其是否可以進行鍛造加工。將其結 果顯示於第1圖。於第1圖之中，〇爲屬於可以鍛造加工 者，X爲產生裂痕無法進行鍛造加工。△爲雖然可以進鍛造 加工，但是加熱溫度很高，從金屬模具的使用壽命的觀點 來看爲有問題者。還有，於第1圖之中，顯示數學式（1)爲 Τ = 3ι*! + 150,數學式（2)爲T = 3ri + 10。於數學式（1)、數學式（2) 中τ爲加熱溫度’ r!爲車L縮率。 如第1 (a)圖所示般對拉製材料進行鍛造加工之情形中 ，相對於軋縮率q (%)，藉由加熱至滿足τ^3Γι + 1〇之溫度 T °C，便可進行鍛造。亦即，在使用拉製材料之情形，可知 道其即使加熱未滿25 0°C，也充分足夠進行鍛造加工。特別 是軋縮率爲20〜30%左右者，其於滿足T<3ri + 150之溫度下 也充分足以進行鍛造加工。在加熱至25 0°C之情形中’即使 在軋縮率在20〜80 %中之任一者之時，皆可以進行鍛造加工 ’但是若考慮到金屬模具的使用壽命時，仍然期3藉由不 滿250°C之加熱溫度之加工。The A1 content in the AS system is 2.0 to 12.0 by weight. For example, for example, AS 41 and the like. AS41 is, for example, Α1:3·7 to 4·8%, Ζη:0·1% or less, Cu: 0.15% or less, Μη:0·35 to 0.60%, and Ni: 0.001% or less in terms of % by weight. , Si: 0.6 to 1.4% of a magnesium-based alloy. In the AS system, an example in which the A1 content is 0.1 to 2.0% by weight or less is, for example, AS21 or the like. A S21 is, for example, contained AL 1.4 to 2.6%, Zn ··0·:! % or less, C u : 0 · 15 % or less, Μ η : 0 · 3 5 〜 0 · 6 0 in terms of % by weight. %, N i: 0 · 0 0 1 %, Si: 0.6 to 1.4% of a magnesium-based alloy. Among the AM systems, for example, AM60, AM100, and the like. For example, AM60 contains A1: 5 . 5 to 6 · 5 %, Ζ η : 0 · 2 2 % or less, Cu: 0.35% or less, Μ η: 0·13% or more, and Ni: Magnesium-based alloy of 0.03% or less and Si: 0.5% of -12-1279446. AM 10 0 is, for example, Α1:9·3 to 10.7%, Ζη:0·3% or less, CuiO.l% or less, Μη:0·1 to 0.35%^, and Ni:〇.镁1% or less, si: 〇3% or less of the magnesium-based alloy. 『For the ZK system, for example, ZK40, ZK60, etc. ZK40 is, for example, a magnesium-based gold containing Zn: 3.5 to 4.5% and Zr: 0.45% or more in terms of % by weight. ZK 60 is, for example, a magnesium-based alloy containing Ζη: 4·8 to 6.2% and Ζγ: 0.45% or more in terms of % by weight. In the case of a magnesium monomer, it is difficult to obtain sufficient strength, but a preferable strength can be obtained by containing the above chemical component. The present invention is a molded body obtained by plastically processing a line body, and is suitable for use in, for example, a frame for reinforcement such as an eyeglass frame or a portable electronic device, or for the manufacture of screws or the like. [Embodiment] Hereinafter, embodiments of the present invention will be described. (Example 1) It is prepared to contain A1: 3.0 %, η η : 1.0%, Μ η : 0.1 5 % by weight %, and the remainder is a magnesium-based alloy composed of Mg and impurities (corresponding to ASTM) Extrusion material (0) 4.0 mm, (D 3.0 mm) of the material of mark AZ31. The extruded material of Φ4.0πιπι is first subjected to drawing processing to Φ3·0ιηιη at a temperature of about 160 ° C and a reduction rate of 20% or less after each roller stroke (heating to 160°) The heating rate of C: about l 〇 ° C / sec, operating speed: 16 m / sec). Further, after the drawing process, heat treatment was carried out at 350 ° C for 15 minutes, and the strain at the time of drawing was removed to carry out uniform finening of the structure by recrystallization. -13- 1279446 The obtained Φ 3 · Omm drawn material and the unpulsed φ 3 · 0 m m extruded material were each cut to a length of 3 m and used as a test piece. These test pieces were subjected to forging processing along the line axis direction at various rolling reduction rates. At this time, each test piece was heated at various temperatures under the range of 100 ° C to 250 ° C for forging processing. Then' investigate whether it can be forged. The result is shown in Fig. 1. In Fig. 1, 〇 is a forging machine, and X is a forging process that cannot be forged. △ Although the forging process can be performed, the heating temperature is high, and there is a problem from the viewpoint of the service life of the metal mold. Further, in Fig. 1, the mathematical expression (1) is shown as Τ = 3ι*! + 150, and the mathematical expression (2) is T = 3ri + 10. In Mathematical Formula (1) and Mathematical Formula (2), τ is the heating temperature 'r! In the case of forging a drawn material as shown in Fig. 1(a), by heating to a temperature T °C satisfying τ^3Γι + 1〇 with respect to the rolling reduction ratio q (%) Forging. That is, in the case of using a drawn material, it is known that it is sufficiently sufficient for forging processing even if the heating is less than 25 °C. In particular, if the rolling reduction ratio is about 20 to 30%, it is sufficiently sufficient for forging processing at a temperature satisfying T<3ri + 150. In the case of heating to 250 ° C, 'when the rolling reduction ratio is 20 to 80%, the forging process can be performed'. However, if the service life of the metal mold is taken into consideration, it is still borrowed. Processing by a heating temperature of less than 250 °C.
相對於此，如第1 (b)圖所示般，在對未進行拉製加1工 的擠製材料進行鍛造加工之情形中，相對於軋縮率^ (°/〇) ’ 若不在滿足Τ-3Γι +150的加熱條件下進行加工的話’無法 進行鍛造加工。特別從中可知屬於工業上有效的加工之車L -14- 1279446 縮率超過40%之鍛造加工之情形中，一定要加熱至25 0 °C。 亦同時於組成相異的鏡基合金進彳了同樣的試驗。亦即 ，對於擠製材料施行上述之拉製加工之後，對經進行熱處 理過之拉製材料，於各種軋縮率且於1〇〇〜2 5 0°c範圍各種溫 度下沿線軸方向進行鍛造加工。於以下顯示經進行試驗之 錶基合金的組成。 以重量％而言含有 AL1.2%、Ζη··0.4%、Μη:0·3%，其餘 部分爲由Mg以及雜質所構成之鎂基合金（相當於ASTM記 號AZ1 0之材料） 以重量％而言含有 Α1:6·4%、Ζη:1·0%、Mn:0.28%，其餘 部分爲由Mg以及雜質所構成之鎂基合金（相當於AS TM記 號AZ61之材料） 以重量％而言含有入1:9.0%、211:0.7%、1^1：1:0.1%5其餘 部分爲由Mg以及雜質所構成之鎂基合金（相當於ASTM記 號AZ91之材料） 以重量％而言含有 Al:1.9%、Zn:0.45%、Si:1.0%，其餘 部分爲由Mg以及雜質所構成之鎂基合金（相當於ASTM記 號A S 2 1之材料） 以重量％而言含有 Α1:4·2%、Μη··0·50%、Si:l.l%，其餘 部分爲由Mg以及雜質所構成之鎂基合金（相當於ASTM記 號A S 4 1之材料） 以重量％而言含有Α1:6·1%、Mn:0.44%，其餘部分爲由 Mg以及雜質所構成之鎂基合金（相當於ASTM記號AM60 之材料） 1279446 以重量％而言含有Ζικ5.5%、Zr:0.45%，其餘部分爲由 Mg以及雜質所構成之鎂基合金（相當於AS TM記號ZK60之 材料） 如此而爲，不論是任何一種試料，相對於軋縮率^ (%) ，皆可藉由加熱於滿足T-3ri + 10之溫度Tt下，而可以進 行鍛造加工，即使是於不滿2 5 0°C加熱，也可以充分地進行 加工。 (實施例2) ‘ 對於在實施例1同樣的拉製條件下所製作的Φ 3 . Omm的 拉製材料（相當於ASTM記號AZ31之材料）以及未實施拉製 加工之Φ3.0mm的擠製材料，進行型鍛加工。型鍛加工爲於 10 0〜2 5 0 °C的範圍中之各種溫度下加熱各試驗材料：進行加 工以使得其直徑變爲（D2.7mm(斷面減少率19%)、Φ2·4ιηηι( 同 36%)、（D2.3mm(同 41.2%)、Φ2·1χηιη(同 51%)、〇)1.9nim( 同59.9%)、〇1.6111111(同71.6%)、（1)1.4111111(同78.2%)之7種 直徑來改變斷面減少率。然後，調查其是否可進行型鍛加 工。將其結果顯示於第2圖。於第2圖之中，〇爲屬於可 以型鍛加工者’ X爲產生裂痕無法進行型鍛加工。△爲雖然 可以進型鍛加工，但是加熱溫度很高，從金屬模具的使用 壽命的觀點來看爲有問題者。還有，於第2圖之中，顯示 數學式（3)爲T = 3r2+150 ’數學式（4)爲τ = 3γ2 - 30。於數學式 (3)、數學式（4)中T爲加熱溫度，r2爲斷面減少率。 如第2 (a)圖所不般’對拉製材料進行型鍛加工之情形 中’相對於斷面減少率M%)，藉由加熱至滿足Tg3r2-30 -16- 1279446 之溫度T°c，便可進行型鍛加工。亦即，可知在使用拉製材 料之情形，即使加熱不滿25 0°c，也充分足以進行型鍛加工 - 。特別是斷面減少率在2 0〜3 0 %左右者，即使處於滿足 - T<3r2+1 50之溫度下，也充分足以進行加工。還有，在加熱 至25〇°C之情形中，於斷面減少率爲20〜80%中之任一者之 ‘ 下，皆可以進行型鍛加工，不過在考慮到金屬模具的使用 壽命之時，期望能進行藉由不滿25 0°C之加熱所成之加工。 相對於此，如第2(b)圖所示般，在對未進行拉製加工 的擠製材料進行型鍛加工之情形中，即使斷面減少率r2爲 馨 2 0〜3 0 %左右，若不在滿足T $ 3 r 2 + 1 5 0的加熱條件下進行加 工的話，無法進行型鍛加工。特別是在斷面減少率超過40% 以上之下，若不加熱至25 0 °C以上，無法進行型鍛加工。 亦同時於組成相異的鎂基合金進行同樣的試驗。亦即 ’對於擠製材料施行和實施例1相同之拉製加工之後，對 經進行熱處理過之拉製材料，於上述七種直徑之各種斷面 減少率之下，而於100〜250 °C之範圍之各種溫度下進行型鍛 加工。鎂基合金係使用和上述所示成分爲相同的相當於 鲁 AZ10材料、相當於AZ61材料、相當於AZ91材料、相當 於A S 2 1材料、相當於a S 4 1材料、相當於a Μ 6 0材料、相 當於ΖΚ60材料。 試驗的結果，不論是那一種試料，相對於斷面減少率 ， Μ°/。）’皆可藉由加熱至滿足τ^3γ2-3〇的溫度T°C之下，順 ' 利進行型鍛加工，即使於加熱未滿2 5 〇它之下，也可以充分 地進行加工。 -17- 1279446 (實施例3) 對於藉由和實施例1相同的拉製條件所製作的Φ 3.0 m m - 拉製材料（相當於ASTM記號AZ3 1之材料），更進一步進行 一 拉製加工（於溫度1 60。(：，每一輥道行程的斷面減少率··約 - 15〜18%。昇溫至160 t：的昇溫速度··約lOt/sec、運轉速度 -:2〇m/sec)、得到斷面形狀爲矩形（厚度t lmmx寬度3mm) 的棒材。對這個棒材施以3 5 0 °Cx 15min的熱處理，得到試 驗片。還有準備和在實施例1之中所使用者同樣的成分（相 當於A S T Μ記號A Z 3 1之材料），且厚度爲t 1 m m的輥軋材 _ 料，切出3mm的寬度，做爲試驗片。 對所得厚度t lmmx寬度3mm的抽製拉製材料以及厚 度t lmmx寬度3mm的輥軋材料的各試驗片進行種種彎曲 半徑R的彎曲加工。彎曲加工是將各試驗片加熱至在20〜250 °C的範圍之內的各種溫度進行。然後，調查是否可以進行 彎曲加工。將其結果顯示於第3圖。於第3圖中，〇爲屬 於可以彎曲加工者，X爲產生裂痕無法進行彎曲加工。△爲 雖然可以進彎曲加工，但是加熱溫度很高，從金屬模具的 馨 使用壽命的觀點來看爲有問題者。還有，於第3圖之中， 顯示數學式（5)爲 T = -25 0R/t + 250，數學式（6)爲 T = -250R/t + 5 00。於數學式（5)、（6)中Τ爲加熱溫度，R爲彎曲 半徑，t爲試驗片的厚度。 ~ 如第3 ( a)圖所不般’在對拉製材料進行彎曲加工之情 -形中，彎曲半徑R(mm)和試驗片的厚度t(inm)之間的比R/t 在滿足0.1$R/tS1.0之時，藉由加熱至滿足Tg-2 5 0 R/t + 250 -18- 1279446 之溫度T°c，可進行彎曲加工。特別是R/t爲超過1 ·〇不滿 2.0之情形，加熱溫度爲T<_2 50R/t + 5 00的溫度，具體而言 ，即使是於室溫左右的20 °C，也充分足以進行彎曲加工。 且於R/t爲2.0，且爲2CTC時，充分足以進行彎曲加工亦即 ，可知在使用拉製材料之情形，即使於不滿2 5 (TC的加熱之 下，也可以充分的進行彎曲加工。還有，在加熱至250 °C之 情形，即使於0.1〜2·0之任一種的R/t下，皆可以進行彎曲 加工，不過在考慮到金屬模具的使用壽命之時，期望能進 行藉由不滿2 5 0 °C之加熱所成之加工。 相對於此，如第3 (b)圖所示般，在對未進行拉製加工 的擠製材料進行彎曲加工之情形中，即使R/t値爲1.0以上 ，若不在滿足Tg-25 0R/t + 500的加熱條件下進行加工的話 ’無法進行加工。特別是在R /1値在0 · 5以下的強加工之下 ，若不加熱至250 °C，無法進行彎曲加工。 亦同時於組成相異的鎂基合金進行同樣的試驗。亦即 ，對於擠製材料施行和實施例1相同之拉製加工之後，更 進一步拉製加工爲斷面矩狀之後，對經進行熱處理過之拉 製材料，於R/t値爲0.1〜2.0之各種彎曲半徑下，且於2〇〜 250 °C之範循之各種溫度下進行彎曲加工。鎂基合金係使用 和上述所示成分爲相同的相當於AZ 1 0材料、相當於AZ6 j 材料、相當於AZ91材料、相當於AS21材料、相當於aS41 材料、相當於A Μ 6 0材料、相當於z K 6 0材料。 試驗結果’不論是任一種試料，當〇 ·丨$ R /1 $丨.〇之時 ，在溫度T°C滿足T-_2 5 0R/t + 25〇的加熱條件下，充分足 1279446 以進行彎曲加工。當1.0<R/t$1.9之時，即使溫度ΤΓ〇爲 比-25 0R/t + 5 00更小的溫度，而當R/t爲1.0以上之時，即 ~ 使在室溫左右的2 0 °C之下，也充分足以進行彎曲加工。如 - 此般，不論是任何一種試料，即使是於不滿25 0°C的加熱環 ' 境，也充分足以進行彎曲加工。 ， (產業上之可利用性） 以上，如所說明般，若根據本發明鎂基合金成形體的 製造方法的話，則藉由拉製加工所得到的線條體，可以達 成於不滿250°C的加工溫度下進行塑性加工之優異效果。因 鲁 此，本發明不須要像直接將擠製材料或是輥軋材料予以塑 性加工之習知技術，於塑性加工之際，必須加熱至250 °C以 上的高溫，而可以加長金屬模具以及滾筒等的加工材料的 使用壽命，可以高生產性的得到鎂基合金的成形體。 【圖式簡單說明】 第1圖爲表示於各種溫度下，當改變軋縮率來進行鍛 造加工時，是否可鍛造加工的圖表，第1(a)圖表示拉製材 料，第1(b)圖表示擠製材料。 _ 第2圖爲表示於各種溫度下，當改變斷面減少率來進 行型纟k加工時’是否可型鍛加工的圖表，第2 (a)圖表示拉 製材料，第2(b)圖表示擠製材料。 第3圖爲表示於各種溫度下，當改變彎曲半徑R和被 、 加工材料的厚度t之比的R/t値來進行彎曲加工時，是否 可彎曲加工的圖表，第3(a)圖表示拉製材料，第3(b)圖表 不擠製材料。 •20- 1279446On the other hand, as shown in Fig. 1(b), in the case of forging processing of the extruded material which has not been subjected to drawing and drawing, the rolling reduction ratio ^(°/〇)' is not satisfied. If processing is carried out under heating conditions of Τ-3Γι +150, 'forging processing cannot be performed. In particular, it can be seen that in the case of forging processing in which the industrially effective processing vehicle L-14- 1279446 has a shrinkage ratio of more than 40%, it must be heated to 25 °C. At the same time, the same test was carried out on the composition of the mirror-based alloy. That is, after the above-mentioned drawing process is performed on the extruded material, the drawn material which has been heat-treated is forged in the direction of the bobbin at various temperatures ranging from 1 〇〇 to 250 ° C at various temperatures. machining. The composition of the base alloy tested was shown below. In terms of % by weight, it contains AL 1.2%, Ζη··0.4%, Μη: 0·3%, and the rest is a magnesium-based alloy composed of Mg and impurities (corresponding to the material of ASTM mark AZ1 0) by weight% In other words, it contains Α1:6·4%, Ζη:1·0%, Mn: 0.28%, and the rest is a magnesium-based alloy composed of Mg and impurities (corresponding to the material of ASTM mark AZ61) in terms of % by weight. The magnesium-based alloy (corresponding to the material of ASTM mark AZ91) composed of Mg and impurities is contained in the range of 1:9.0%, 211:0.7%, 1^1:1:0.1%. : 1.9%, Zn: 0.45%, Si: 1.0%, and the remainder is a magnesium-based alloy composed of Mg and impurities (corresponding to the material of ASTM mark AS 2 1) containing Α1:4·2% by weight% Μη··0·50%, Si:ll%, and the remainder is a magnesium-based alloy composed of Mg and impurities (corresponding to the material of ASTM mark AS 4 1) containing Α1:6·1% by weight% Mn: 0.44%, the remainder being a magnesium-based alloy composed of Mg and impurities (corresponding to the material of ASTM mark AM60) 1279446 contains Ζικ5.5%, Zr: 0.45% by weight%, The magnesium-based alloy consisting of Mg and impurities (corresponding to the material of the AS TM mark ZK60) is such that any sample can be heated to satisfy the T regardless of the rolling reduction ratio (%). -3ri + 10 temperature Tt, and can be forged, even if it is heated below 250 °C, it can be fully processed. (Example 2) 'The drawn material of Φ 3 .0 mm (material equivalent to ASTM mark AZ31) produced under the same drawing conditions as in Example 1 and the extrusion of Φ 3.0 mm which was not subjected to drawing processing Material, forging processing. The swaging process heats each test material at various temperatures in the range of 10 0 to 25 ° C: processing to make the diameter become (D2.7 mm (section reduction rate 19%), Φ2·4ιηηι ( Same as 36%), (D2.3mm (same as 41.2%), Φ2·1χηιη (same as 51%), 〇) 1.9nim (same as 59.9%), 〇1.6111111 (same as 71.6%), (1) 1.4111111 (same as 78.2%) 7 kinds of diameters to change the reduction rate of the section. Then, investigate whether it can be swaged. The result is shown in Fig. 2. In Fig. 2, 〇 is a type of forging machine' X It is impossible to carry out the swaging process because of the crack. △ Although the forging process can be carried out, the heating temperature is high, and there is a problem from the viewpoint of the service life of the metal mold. Also, in Fig. 2, the mathematics is shown. Equation (3) is T = 3r2+150 'The mathematical formula (4) is τ = 3γ2 - 30. In the mathematical formula (3), the mathematical formula (4), T is the heating temperature, and r2 is the reduction rate of the section. 2 (a) The figure is not 'in the case of swaging the drawn material 'with respect to the reduction rate of the section M%'), by heating to a temperature T°c satisfying Tg3r2-30 -16-1279446, It can be swaged. That is, it can be seen that in the case of using a drawn material, even if the heating is less than 25 ° C, it is sufficient for swaging processing. In particular, if the reduction rate of the section is about 20 to 30%, even if it is at a temperature satisfying -T<3r2+1 50, it is sufficient for processing. Further, in the case of heating to 25 ° C, the swaging process can be performed under any of the section reduction ratios of 20 to 80%, but considering the service life of the metal mold. At the time, it is desirable to perform processing by heating at less than 25 ° C. On the other hand, as shown in FIG. 2(b), in the case of swaging the extruded material which has not been subjected to drawing, even if the reduction ratio r2 is about 20 to 30%, If the machining is not performed under the heating condition of T $ 3 r 2 + 150, the swaging process cannot be performed. In particular, when the reduction rate of the section is more than 40%, the swaging process cannot be performed unless it is heated to 25 ° C or higher. The same test was carried out simultaneously on the composition of the different magnesium-based alloys. That is, after the same drawing process as in the first embodiment is performed on the extruded material, the heat-treated drawn material is below the various cross-sectional reduction rates of the above seven diameters, and is at 100 to 250 ° C. The swaging process is performed at various temperatures in the range. The magnesium-based alloy is the same as the above-mentioned components, and is equivalent to the AZ10 material, the AZ61 material, the AZ91 material, the AS 2 1 material, the a S 4 1 material, and the equivalent of a Μ 60. Material, equivalent to ΖΚ60 material. The result of the test, regardless of the sample, relative to the reduction rate of the section, Μ°/. The steel can be subjected to swaging by heating to a temperature T °C satisfying τ^3γ2-3〇, and the processing can be sufficiently performed even if the heating is less than 2 5 〇. -17- 1279446 (Example 3) A Φ 3.0 mm - drawn material (corresponding to the material of the ASTM mark AZ3 1) produced by the same drawing conditions as in Example 1 was further subjected to a drawing process ( At a temperature of 1 60. (:, the reduction rate of the cross section of each roller stroke is about - 15 to 18%. The temperature rise to 160 t: the temperature rise rate · about lOt / sec, the operation speed - 2 〇 m / Sec), a bar having a rectangular cross section (thickness t lmm x width 3 mm) was obtained. This bar was heat-treated at 350 ° C for 15 min to obtain a test piece. Also prepared and in Example 1. The same composition (corresponding to the material of AST Μ mark AZ 3 1) and a rolled material having a thickness of t 1 mm were cut out to have a width of 3 mm as a test piece. The obtained thickness t lmmx width 3 mm Each of the test pieces of the drawn material and the rolled material having a thickness t lmmx and a width of 3 mm was subjected to bending processing of various bending radii R. The bending process was to heat each test piece to various temperatures within a range of 20 to 250 ° C. Then, it is investigated whether or not bending can be performed. The result is shown in Fig. 3. In Fig. 3, 〇 is a bendable processor, and X is a crack that cannot be bent. △ Although it can be bent, the heating temperature is high, and there is a problem from the viewpoint of the stencil life of the metal mold. Also, in Fig. 3, the mathematical formula (5) is shown as T = -25 0R/t + 250, and the mathematical formula (6) is T = -250R/t + 5 00. In the mathematical formula (5) (6) The middle is the heating temperature, R is the bending radius, and t is the thickness of the test piece. ~ As shown in the third (a) figure, in the case of bending the drawn material, the shape is curved. The ratio R/t between the radius R (mm) and the thickness t (inm) of the test piece satisfies Tg-2 5 0 R/t + 250 -18 when it satisfies 0.1$R/tS1.0. - 1279446 temperature T °c, can be bent. Especially when R / t is more than 1 · 〇 less than 2.0, the heating temperature is T < _2 50R / t + 5 00 temperature, specifically, even 20 ° C at room temperature is also sufficient for bending processing. When R / t is 2.0 and 2 CTC, it is sufficient to perform bending processing. That is, it is known that in the case of using a drawn material, Under the heating of less than 2 5 (TC can also be fully bent. Also, in the case of heating to 250 °C, even at R/t of any of 0.1~2·0, it can be carried out. Bending, but when considering the service life of the metal mold, it is desirable to perform processing by heating at less than 250 °C. On the other hand, as shown in the third figure (b), in the case where the extruded material that has not been drawn is subjected to bending, even if R/t 値 is 1.0 or more, if Tg-25 0R/ is not satisfied. If processing is carried out under heating conditions of t + 500, 'processing is impossible. Especially in the case of R / 1 强 under strong processing of 0 · 5 or less, if it is not heated to 250 ° C, bending cannot be performed. The same test was carried out simultaneously on the composition of the different magnesium-based alloys. That is, after the extrusion processing of the extruded material is carried out in the same manner as in the first embodiment, after further drawing into a rectangular section, the drawn material after heat treatment is R/t 0.1 0.1 to 2.0. Bending at various bending radii and at various temperatures ranging from 2 〇 to 250 °C. The magnesium-based alloy is equivalent to the above-mentioned components and corresponds to the AZ 10 material, the AZ6 j material, the AZ91 material, the AS21 material, the aS41 material, and the A Μ 60 material. For z K 6 0 materials. The test result 'Whether it is any sample, when 〇·丨$ R /1 $丨.〇, under the heating condition that the temperature T°C satisfies T-_2 5 0R/t + 25〇, it is sufficient to carry out 1279446 Bending processing. When 1.0 < R / t $ 1.9, even if the temperature ΤΓ〇 is a temperature smaller than -25 0R / t + 500, and when R / t is 1.0 or more, that is ~ 2 at room temperature Below 0 °C, it is also sufficient for bending. For example, any sample, even at a temperature of less than 25 °C, is sufficient for bending. (Industrial Applicability) As described above, according to the method for producing a magnesium-based alloy formed article of the present invention, the linear body obtained by the drawing process can be achieved at less than 250 ° C. Excellent effect of plastic working at processing temperature. Because of this, the present invention does not need to be a conventional technique for plastically processing extruded materials or rolled materials. At the time of plastic processing, it is necessary to heat to a temperature higher than 250 ° C, and the metal mold and the drum can be lengthened. For the service life of the processed material, a molded body of a magnesium-based alloy can be obtained with high productivity. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a graph showing whether or not forging processing can be performed when the rolling reduction is changed at various temperatures, and Fig. 1(a) shows a drawn material, 1(b) The figure shows the extruded material. _ Fig. 2 is a graph showing whether or not the swaging process can be performed when the profile reduction rate is changed at various temperatures, and Fig. 2(a) shows the drawn material, and Fig. 2(b) Indicates extruded material. Fig. 3 is a graph showing whether or not the bending process can be performed when the bending process is performed by changing the ratio R/t 弯曲 of the ratio of the bending radius R to the thickness t of the material to be processed at various temperatures, and Fig. 3(a) shows Drawn material, Figure 3(b) does not extrude material. •20- 1279446
元件符號說明 數學式（1) + Ι 50 數學式（2) 丁 = 3]^ + 1 0 數學式（3) T = 3r2+150 數學式（4) T = 3r2-30 數學式（5) T = -25 0R/t + 250 數學式（6) T = -2 5 0R/t + 5 00 T 加熱溫度 Γι 軋縮率 斷面減少率 R 彎曲徑 t 試驗片的厚度 -21 -Component Symbol Description Mathematical Formula (1) + Ι 50 Mathematical Formula (2) D = 3]^ + 1 0 Mathematical Formula (3) T = 3r2+150 Mathematical Formula (4) T = 3r2-30 Mathematical Formula (5) T = -25 0R/t + 250 Mathematical formula (6) T = -2 5 0R/t + 5 00 T Heating temperature Γι Reduction rate section reduction rate R Bending diameter t Thickness of test piece-21 -