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      Home >> News >>技術文章 >> 詳細介紹力學材料試驗機的幾種分類
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      詳細介紹力學材料試驗機的幾種分類

      力學材料試驗機,是在各種條件、環境下測定金屬材料、非金屬材料、機械零件、工程結構等的機械性能、工藝性能、內部缺陷和校驗旋轉零部件動態不平衡量的精密測試儀器。在研究探索新材料、新工藝、新技術和新結構的過程中,材料試驗機是一種不可缺少的重要檢測儀器。多用于金屬及非金屬(含複合材料)的拉伸、壓縮、彎曲、剪切、剝離、撕裂、保載、松弛、往複等項的靜力學性能測試分析研究。

      力學材料試驗機按加荷方法可分爲靜負荷試驗機(靜態)和動負荷試驗機(動態)

      靜態试验机

      1、萬能試驗機

      包括液壓萬能試驗機和電子萬能試驗機,雙絲杆系列,控制、測量、操作一體化結構融當代先進技術于一體,具有精度高、調速範圍寬、結構緊湊、操作方便、性能穩定等優點。

      適用材料:橡膠、塑料、薄膜、膠粘劑、鋼筋、玻璃、觸摸屏、紡織物、防水材料、電線電纜、網繩、金屬絲、金屬棒、金屬板等光伏材料及服裝行業等

      測試項目:拉伸應力、拉伸強度、定伸應力、定應力伸長率、斷裂強度、斷後伸長率、屈服強度、屈服點伸長率、屈服點拉伸應力、撕裂強度、剝離強度、穿刺強度、彎曲強度、彈性模量等

      涉及標准:

      GB/T1040.1-2006塑料拉伸性能的測定

      GB/T 1041-2008 塑料 压缩性能的测定

      GB/T 8804.1-2003 热塑性塑料管材 拉伸性能测定 第1部分 试验方法总则

      GB/T 9341-2008 塑料 弯曲性能的测定

      GB/T 9647-2015 热塑性塑料管材 环刚度的测定

      ISO 7500-1-2015 金属材料靜態单轴向试验机的验证

      GB/T 16491-2008 電子式萬能試驗機

      GB/T 17200-2008 橡膠塑料拉力、壓力和彎曲試驗機(恒速驅動) 技術規範

      ISO 5893-2002 橡膠和塑料試驗設備.拉伸、彎曲和壓縮型

      ASTM D638-2003 塑料拉伸性能測定方法

      ASTM D 695-2010 硬質塑料抗壓特性試驗方法

      ASTM D790-2003 未增強和增強塑料及電絕緣材料彎曲性的標准試驗方法和塑料管材等標准的要求

      CMDW-10kn(20kn) - 副本.jpg

      2、壓力試驗機

      壓力試驗機也稱電子壓力試驗機。

      適用材料:橡膠、塑料板材、管材、異型材,塑料薄膜、電線電纜、防水卷材、金屬絲、紙箱等材料

      測試項目:壓縮試驗,拉伸試驗

      性能: 拉伸試驗(應力-應變試驗)一般是將材料試樣兩端分別夾在兩個間隔一定距離的夾具上,兩夾具以一定的速度分離並拉伸試樣,測定試樣上的應力變化,直到試樣破壞爲止。

      部分結構:

      感溫棒:旋入式熱電偶,測溫靈敏、均勻、精度高。  

      發熱器:旋入式加熱器,功率大、升溫快而且耐用性強。

      立柱銅套:采用黃銅精制而成,耐磨且無阻力。  

      動力系統:采用特殊馬達,使運轉平穩,精准,無燥音。

      安全保護:附緊急保護裝置,遇緊急狀況可使機台停止或反轉。

      YAW-300C全自动抗折抗压试验机 - 副本.jpg

      3、拉力試驗機

      同萬能試驗機。

      適用材料:塑料板材、管材、異型材,塑料薄膜及橡膠、電線電纜、鋼材、玻纖維等材料

      涉及標准:GB/T16491GB/T1040GB/T8804.1GB/T8804.2GB/T1041GB/T9341GB/T8808GB/T18477GB/T583GB13022等標准。

      測試項目:靜載、拉伸、壓縮、彎曲、剪切、剝離等力學性能。

      CMDS-1020.jpg

      4、扭轉試驗機

      扭轉試驗機分爲彈簧扭轉試驗機、線材扭轉試驗機和材料扭轉試驗機。

      適用材料:金屬和非金屬以及零部件等。

      金屬線材扭轉試驗機適用于測定直徑(或特征尺寸)0.1-10.0mm 的金屬線材在單向或雙向扭轉中承受塑性變形的能力及顯示線材表面和內部的缺陷。

      測試項目:扭轉性能試驗,最大扭矩、抗扭強度、上屈服強度和下屈服強度等性能。

      涉及標准: GB/T 239-1999《金屬線材扭轉試驗方法》,國際標准ISO 7800:1984《金屬線材單向扭轉試驗方法》和ISO 9649:1990《金屬線材雙向扭轉試驗方法》。

      弹簧扭转试验机.jpg

      5、蠕變試驗機

      蠕变持久试验机,按结构和原理分机械式、电子式两种;机械式爲传统的产品,电子式是近几年开发的新产品。

      適用材料:金屬、非金屬材料等

      測試項目:拉伸、壓縮持久、蠕變、松弛試驗以及低周疲勞和蠕變疲勞試驗

      涉及標准:

      GB/T2039-1997《金屬拉伸蠕變機持久試驗方法》

      HB5151-1996《金屬高溫拉伸蠕變試驗方法》

      HB5150-1996《金屬高溫拉伸持久試驗方法》

      JJG276-88《高溫蠕變、持久強度試驗機》

      1、動靜萬能試驗機

      動靜萬能試驗機的主機采用雙立柱式結構,最大靜負荷是5KN,最大動負荷是2.5KN,測量範圍是2-100%

      功能特點:

      (1)主機采用雙立柱式結構。

      (2)要对金属和非金属材料进行对称循环疲劳试验。同时也可进行靜態拉伸等相关试验。

      (3)測控系統采AD850萬能試驗卡及ATOS伺服閥,可實現試驗全過程的自動控制,全部鍵盤操作。

      (4)具有負荷、位移、變形三種控制方式及控制方式之間的平滑轉換功能,自動采集處理試驗數據,繪制試驗曲線,打印試驗報告。

      適用材料:各種材料、零部件、彈性體、橡膠彈性體和減振器等

      測試項目:拉伸、壓縮、彎曲、低周和高周疲勞、裂紋擴展、斷裂力學試驗

      CMDW-50100 - 副本.jpg

      2、疲勞試驗機

      疲劳试验机是可以通过各种方式测试疲劳的机器,根据试验频率可分爲低频疲劳试验机、中频疲劳试验机、高频疲劳试验机、超高频疲劳试验机。

      適用材料:金屬、合金材料及其構件(如操作關節、固接件、螺旋運動件等)

      測試項目:室溫狀態下的拉伸、壓縮或拉壓交變負荷的疲勞特性、疲勞壽命、預制裂紋及裂紋擴展試驗

      注意事项:复合材料不可以用电磁式高频疲劳试验机进行疲劳试验,因爲电磁式是采用电磁谐振原理驱动的,与试样的刚性有关,所以复合材料只能用电机驱动疲劳试验。

      疲劳试验机3。.jpg

      3、沖擊試驗機

      沖擊試驗機(英文名稱:impacttesting machine)是指对试样施加冲击试验力,进行冲击试验的材料试验机。冲击试验机分爲手动摆锤式冲击试验机、半自动冲击试验机、数显冲击试验机、微机控制冲击试验机、落锤冲击试验机以及非金属冲击试验机等。

      適用材料:金屬、非金屬材料

      測試項目:沖擊試驗

      應用範圍:

      1)選材及新材料研制

      2)冶金産品檢查控制

      3)工藝質量監督

      4)各種條件下韌性評定

      5)冶金産品交貨重要指標之一

      图片1.jpg

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      [Pg 73] They had a walk of several hours, and on their return to the hotel were quite weary enough to rest awhile. Frank and Fred had a whispered conversation while the Doctor was talking with an old acquaintance; and as soon as he was at liberty they told him what they had been conversing about. We leave the green fields far below; "One day a favorite lady of the emperor's palace persuaded the emperor to give the signal, to see how long it would take for the generals and the army to get to Pekin. He gave the signal, and the army came, but the generals were very angry when they found they had been called together just to amuse a woman. They went back to their homes, and the affair was supposed to be forgotten. Even in the character of the goods there was eloquence, and not a drollery in the scene, not even an ugliness, but was touched, was rife, with the woe of a war whose burning walls were falling in on us. And outward, too, upon others; a few up-ended cottonbales leaned against each other ragged and idle, while women and babes starved for want of them in far-away Lancaster. He was within easy range and was still trotting nearer. I snatched up my carbine, aimed, and then recovered, looking sharply to my left as if restrained by the command of some one behind the canes. The Federal's cool daring filled me with admiration. Had the foes he was looking for been actually in hiding here they could have picked him out of his saddle like a bird off a bush. His only chance was that they would not let themselves be teased into firing prematurely on any one man or six. Ferry beckoned me. I mounted and trotted down the woods side of the fence, at the same time the Federal's six men approached from three directions, and down the road the main column entered upon the scene. "She told us about it. And you needn't look so disturbed; she only praised you." "Part with it? Oh, not for the world beside!" XXXIX CHARLOTTE SINGS THE COMING OF THE CLOCKWORK MAN Rose considered. "That's not as good as making runs though." Bruce shut his teeth tightly and nodded. Still, in Prout's evidence he seemed to hear the voice of his judge passing sentence. But the Countess did not heed. Absolutely worn out in mind and body she had fainted. The woman's eyes flashed again. All this was taking time. Balmayne would wonder what had happened to her. From the bottom of her heart she was praying that he might come up and see. Not that there was much real hope of that--physical courage was not one of Louis Balmayne's strong points. In the use of hydraulic apparatus for transmitting and applying power, there is, however, this difficulty to be contended with: water is inelastic, and for the performance of irregular duty, there is a loss of power equal to the difference between the duty that a piston may perform and what it does perform; that is, the amount of water, and consequently the amount of power given off, is as the movement and volume of the water, instead of as the work done. The application of hydraulic machinery to the lifting and handling of weights will be further noticed in another place. At seven o'clock in the morning I was taken to the commanding officer, and was glad to see him again. He jumped up immediately and came to me with a charming smile, when I pointed to my escort and explained that I was a prisoner. "1. Commit a punishable offence mentioned in Clause 90 of the German Penal Code. They yelled and shouted and said that Bilsen and the whole district must be burned down, that the major was far too kind, that they were cowardly soldiers who hid themselves in houses and dared not fight an honest fight in the open, that civilians189 had also been shooting, and so on. I pointed out that the firing did not come from the house, but from the shrubbery near the house; that nobody could have seen a civilian shooting. As they insisted, I said with a laugh that they had seen ghosts. That excited them so, that they came on to me in a rage, and asked whether this was a laughing matter? And they would surely have used violence had not the sergeant intervened. The same, in self-same place, and by itself III. Here, as elsewhere, we shall employ the genetic method of investigation. Aristotle’s writings do not, indeed, present that gradual development of ideas which makes the Platonic Dialogues so interesting. Still they exhibit traces of such a development, and the most important among them seems to have been compiled from notes taken by the philosopher before his conclusions were definitely reasoned out, or worked up into a consistent whole. It is this fragmentary collection which, from having been placed by some unknown editor after the Physics, has received a name still associated with every kind of speculation that cannot be tested by a direct or indirect appeal to the evidence of external sense. IV. Holy Dêmêter’s fruit it gave them; the sweet spring Dear Daddy-Long-Legs, out from Bonnyrigg Four Corners. Amasai stayed up all night to I hope you appreciate the fact that this is a long letter from High on a hill, one with the rock, are built the temples, up to which is a flight of steps hewn in the stone itself. At every stage, or nearly, are little shrines with images of Ganesa, the elephant-headed god, or of Ananta, the sacred serpent, decked with flowers, the mindi flower, which has[Pg 108] a strong scent of pepper. In some places the whole temple, as vast as a cathedral, is hewn out of the hillside; the columns in elaborate and intricate patterns, the niches and altars wrought with inconceivable toil and patience, not a scrap added or stuck on. In the dim distance is a huge red statue of Siva, wreathed with flowers. CAWNPORE AT SEA The lines are as follows, and refer to a chateau then being built by Louis for the Marquise de [6] Pompadour, whose original name was Jeanne Antoinette Poisson: “I wonder who’s in it?” Dick mused as Jeff cut the gun and went into a glide, the better to get a look at the oncoming craft low over the seashore. Their own airplane had been headed south, down the coast. To their left, as they sped on, the lighthouse poked its tower out of the drifting, dispelling fog. The drone of an incoming airplane took them racing to the landing spot where Jeff came down to report that he had taken the unconscious seaplane pilot to a hospital where it was declared that he had a bad blow on his temple and might not recover his mental clearness for many days. The only reason Jeff would swing toward the water and give up working with the stick must be that the stick would not operate the elevators. “That wire, being twined around the other, makes me think it was added—after the first one was put in,” he declared. He watched her as she went out of the tent, and the surgeon and steward worked with the shining little instruments. To add to the fame of Frederick, news arrived that Marshal Lewald, with twenty thousand Prussians, had beaten the great horde of Russians at J?gerndorf, and driven them out of Prussia, with the single exception of Memel; that Lewald and Manteuffel had swept the Swedes out of Pomerania, taking three thousand prisoners; and that Prince Henry of Prussia and Prince Ferdinand of Brunswick, to whom Frederick, at the urgent request of England, had entrusted the command of the Hanoverian and Hessian troops which Cumberland had abandoned, had, with these very troops, driven the French from Lüneburg, Zell, and Hanover. These troops, it is true, were bound by the Convention of Closter-Seven not to fight again during the war; but the generals pleaded that the cruelties and rapacity of the French in Hanover were such as set aside all compacts. The Publishers. "But even if he does send them at once, they can't git here till evenin', and I hate powerfully to let him and the rest know that we didn't have sense enough to take care o' our victuals after we'd drawed 'em," said Si. "How, mad?" "Oh, will you?—Then I'll love you!" There was something in the depths of him that cried for her, something which had never moved or cried in him before. In spite of her lack of beauty and beguilement, in spite of her hostility to all his darling schemes, there was something in him to which Alice actually and utterly belonged. He did not understand it, he could not analyse it, he scarcely indeed realised it—all he felt was the huge upheaval, the conflict that it brought, all the shouting and the struggling of the desperate and motiveless craving that he felt for her—a hunger in him calling through days and nights, in spite of her insignificance, her aloofness, her silences, her antagonism. She had slid back to his knee, and the weight and warmth of her comforted him a little. He lifted his head quickly at her words. She flushed at his audacity. "No w?onder as she cudn't stick to him—hard, queer chap as he be." "I tell you, steward," said the smith who had before spoken, and stepping so near Calverley that he involuntarily drew back, "if you prize your life, you will call no man here a bondman. I am free—that man is free—" pointing to Holgrave, "and we are all free—all sworn brothers; and no one shall dare," raising his voice, "to brand, with such a name, a mother's son among us! You have received fair warning, and leave to go: retire now—instantly, if you are wise! Clear a passage there for my Lord de Boteler's steward! There is now room for you to pass—your retainers are waiting without—and now take the man you call a bondman, and away with you all. What! you will not lay hold of him? Take him, I say!" elevating his voice—"seize the villein, and drag him back to his bondage! What! not a finger, after all the trouble you have taken?—then, away with you alone!—away!" And Calverley, from the mere instinct of obedience to a superior power, moved towards the door. "And if ever," continued the smith, "you are found hunting in this forest again for bondmen, as you call them, we may chance to give you a lodging where you will have little reason to complain that the sun shines too brightly!"
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      ENTER NUMBET 0012