Disain dan Pembuatan Alat Preheat Induksi pada Pengelasan Gesek Logam Dissimilar

Reza Taufikur Rahman, Aris Widyo Nugroho, Totok Suwanda
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引用次数: 1

Abstract

Pengelasan gesek diketahui memiliki keunggulan mampu menyambung dua logam yang berbeda (dissimilar). Meskipun demikian, pengelasan ini masih mengalami kesulitan dalam proses penyambungan karena perbedaan titik lebur dari kedua logam yang disambung. Agar perbedaan suhu pada daerah yang bergesekan tidak terlalu besar, perlu dilakukan pemanasan awal /preheat pada logam dengan titik lebur yang lebih tinggi. Tulisan ini membahas disain dan pembuatan mesin preheat induksi pada las gesek logam dissimilar. Pemanas induksi yang digunakan adalah prinsip-prinsip arus eddy dengan frekuensi tinggi. Mesin preheat induksi ini terdiri atas komponen utama yaitu transformator, diode, transistor mosfet, kapasitor, kumparan kerja, induktor, dan resistor. Kumparan kerja terbuat dari pipa pejal tembaga berdiameter 5 mm, jumlah lilitan, n = 6 lilit dengan tinggi kumparan 35 mm dan diameter lilitan 40 mm. Setelah terangkai, dilakukan pengujian pada silinder pejal stainless steel berdiameter 14 mm dan panjang daerah pemanasan 30 mm. Pemanasan dilakukan sehingga silinder mencapai temperatur >600 °C. Termokopel tipe K digunakan untuk mengukur temperatur silinder. Hasil pengujian menunjukkan bahwa mesin memiliki spesifikasi berupa tegangan kerja rangkaian 20 Volt dan arus maksimal 44 ampere. Temperatur naik dengan cepat hingga 600 °C setelah 70 detik pertama kemudian naik sedikit dan stabil sampai dengan maksimum temperatur 683 °C dengan waktu pengujian sampai dengan 300 detik. Daya listrik berkisar antara 320-674 watt. Hasil ini menunjukkan bahwa mesin preheater telah berhasil dibuat dan berpotensi dapat digunakan sebagai preheater pada proses las gesek dissimilar. Friction welding is known to have the advantage of being able to connect two different metals (dissimilar). However, this welding is still experiencing difficulties in the joining process because of the different melting points of the two metals being joined. In order the temperatur difference in the rubbing area is not too large, it is necessary to do preheat the metal with a higher melting point. This paper discusses the design and manufacture of induction preheat machines in dissimilar metal friction welding. Induction heaters are applied using the principle of eddy current with high frequency. This induction preheat machine consists of main components namely transformer, diode, mosfet transistor, capacitor, working coil, inductor and resistor. The working coil was made of solid copper pipe with a diameter of 5 mm, number of turns, n = 6 turns with coil height of 35 mm and diameter of coil of 40 mm. After being assembled, testing was carried out on a solid stainless steel cylinder with a diameter of 14 mm and a length of 30 mm heating area. The heating process was conducted to achieve temperatur of the higher than 600 °C. A K type thermocouple was used to measure the temperatur. The test results showed that the machine had specifications as follows: a 20 Volt circuit working voltage, with a maximum current of 44 amperes. Temperatur rose rapidly up to 600 °C after the first 70 seconds then increased slightly and was stable up to a maximum temperatur of 683 °C during 300 seconds. Electrical power ranged from 320-674 watts. These results indicated that the preheater machine was successfully fabricated and was potentially be used as a preheater equipment in the dissimilar friction welding process.
焊接磨料的好处在于将两种不同的金属连接在一起。然而,由于连接的两种金属的熔点不同,焊接仍在分工过程中遇到困难。为了避免这些摩擦区域的温差太大,我们需要在带有更大熔点的金属上预热/预加热。这篇文章讨论了金属摩擦焊缝上的预热预热发动机的设计和制造。使用的电加热是艾迪高频电流的原理。预热发动机由变压器、二极管、mosfet晶体管、电容器、工作线圈、电源线和电阻等主要部件组成。工作线圈是由直径5毫米的铜管、线圈数量为n = 6的线圈,线圈高35毫米,直径为40毫米。组装好后,在一个直径14毫米的不锈钢圆柱体上进行了测试,温度为30毫米。做热身运动,达到气缸温度> 600°C。K型温度计是用来测量圆柱体温度的。测试结果显示,这台机器的规格是20伏的电路强度和最大44安培电流。迅速上涨至600°C温度略有上涨,稳定,直到第70秒后的最大温度为683°C与测试时间,直到300秒。电力范围在32 -674瓦之间。这一结果表明,预应力机已被成功制造,并有可能用于焊接缝盘预应力。焊接的优势在于可以连接两个不同的金属。尽管如此,这篇焊接文章仍经历了类似的困难,因为两种金属相互融合的不同点。在舞动地区的温度差异并不大,有必要用更高的熔点来预热金属。这篇论文概述了金属焊接异化预热机器的设计和制造。诱因疗法采用了高度频率的漩涡原理。这一工业前热机公司是主要的复合材料namely transformer, diode, mosfet晶体管,电容器,工作线圈,致使电阻。工作线圈是由直径5毫米、旋转数、直径35毫米的线圈和直径40毫米的线圈制成的。在被宣布后,测试集中在一个直径14毫米、半径30毫米的不锈钢气缸上。加热的过程是conducted到温度高之比为600°C。K型热偶过去常常测量温度。结果显示,这台机器有一个像附表一样的成分:20伏的电路在电压下工作,最大的电流是44安培。罗斯之后的急促到600°C温度第70秒然后increased小史》和683是稳定取决于a最高温度期间°C 300秒。320-674瓦电力。这些潜在的后果是,预制的机器正在成功制造,可能会被用作临时设备。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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