【摘要】：集魚燈作為魷釣行業(yè)的重要輔助工具,使用LED燈作為集魚燈光源,不同于傳統(tǒng)光源的發(fā)散不集中、會產(chǎn)生紫外線傷害、功耗大、光衰嚴(yán)重、使用壽命短的特點,具有定向性、無污染、低能耗、長壽命等特點,對魷釣業(yè)的發(fā)展具有長足的意義。對LED集魚燈燈體結(jié)構(gòu)外殼的研究對于LED集魚燈的應(yīng)用具有十分重要的意義。它包括結(jié)構(gòu)設(shè)計、選材、焊接工藝研究、接頭性能研究等各方面內(nèi)容。另外,為提高焊接質(zhì)量與效率,實現(xiàn)焊接機器人自動化焊接是十分必要的。本文選用316L奧氏體不銹鋼作為LED集魚燈燈殼材料。316L奧氏體不銹鋼屬于超低碳奧氏體不銹鋼,16%-18%的鉻含量使316L在表面形成氧化膜使不銹鋼處于鈍化狀態(tài),鎳能夠使不銹鋼耐均勻腐蝕,碳含量低可減少焊接時鉻的碳化物的析出,從而減少鉻的消耗,另外鉬元素的加入提高了316L對Cl-的耐蝕能力,因此316L結(jié)構(gòu)件普遍應(yīng)用于海洋工程中。結(jié)合焊接實際,利用SYSWELD有限元軟件對集魚燈搭接接頭適度熔透焊接的溫度場進(jìn)行數(shù)值模擬,將模擬熔池與實際焊接熔池進(jìn)行對比,形狀基本吻合,從而驗證了該有限元模型的正確性。并利用該模型對復(fù)合板過度熔透即鋁合金臨近熔穿情況下的溫度場進(jìn)行了模擬。兩種情況所獲得焊接參數(shù),即焊接電流、焊接電壓、焊接速度分別為110A和175A、20V和27V、0.6m/min和0.6m/min,為實際焊接提供了理論指導(dǎo)。本實驗以模擬結(jié)果為指導(dǎo),以焊接電流、焊接電壓、焊接速度為因素,設(shè)計了一個三因素四水平的正交試驗,對LED集魚燈燈殼的焊接工藝進(jìn)行了研究。以評分標(biāo)準(zhǔn)為參照,對焊縫成形進(jìn)行評分,并采用直觀分析法比較各個因素的極差,分析了各個影響因素對焊縫成形的影響的顯著性,其顯著性由高到底依次焊接速度、焊接電流、焊接電壓,并分析了其對焊縫成形的影響,確定了最佳工藝參數(shù),即焊接電流130A、焊接電壓21V、焊接速度0.6m/min。使用最佳工藝參數(shù)進(jìn)行焊接,并進(jìn)行取樣,測定其熔深、熔寬,并對其焊縫和母材進(jìn)行物相、成分、微觀組織、硬度和耐海水腐蝕性能進(jìn)行了研究和分析。母材為單一的奧氏體組織,為軋制而成的纖維組織。焊縫區(qū)為奧氏體+(10%-13%)鐵素體,沿熔合線呈柱狀晶方式生長。焊縫的主要合金元素含量與母材基本一致。316L奧氏體不銹鋼中,焊縫硬度高于母材。焊縫和母材的海水腐蝕速率分別為0.1814mm/a、0.1767mm/a。采用最優(yōu)參數(shù)對LED集魚燈燈殼進(jìn)行試焊,并對其進(jìn)行質(zhì)量檢測,經(jīng)統(tǒng)計其合格率為95%,表明該最優(yōu)參數(shù)可用于實際焊接并指導(dǎo)生產(chǎn)。
[Abstract]:As an important auxiliary tool in squid industry, LED lamp is used as light source in squid industry. Different from the divergence of traditional light source, it will cause UV damage, high power consumption, serious light decay, short service life, and has the characteristics of directivity, which has the characteristics of high power consumption, serious light decay and short service life, which is different from the divergence of traditional light source. The characteristics of no pollution, low energy consumption and long life have great significance to the development of squid fishing industry. It is of great significance for the application of LED collector lamp to study the shell of LED lamp body. It includes structural design, material selection, welding process research, joint performance research and so on. In addition, in order to improve welding quality and efficiency, it is very necessary to realize automatic welding of welding robot. In this paper, 316L austenitic stainless steel is selected as LED lamp shell material. 316L austenitic stainless steel belongs to ultra-low carbon austenitic stainless steel. 316L austenitic stainless steel is passivated by the formation of oxide film on the surface of 316L stainless steel with 18% chromium content. Nickel can resist uniform corrosion of stainless steel. Low carbon content can reduce the precipitation of chromium carbide during welding, thereby reducing the consumption of chromium. In addition, the addition of molybdenum improves the corrosion resistance of 316L to Cl-. Therefore, 316L structural parts are widely used in ocean engineering. Combined with welding practice, numerical simulation of temperature field in appropriate penetration welding of fish lamp lap joint is carried out by using SYSWELD finite element software. The simulated weld pool is compared with the actual welding pool, and the shape is basically consistent. The correctness of the finite element model is verified. The model is used to simulate the temperature field of the composite plate under the condition that the penetration of aluminum alloy is near to the penetration of aluminum alloy. The welding parameters, namely welding current, welding voltage and welding speed, are 110 A and 175 A, 20 V and 27 V, 0.6 mg / min and 0.6 m / min, respectively, which provide theoretical guidance for practical welding. Under the guidance of simulation results and taking welding current, welding voltage and welding speed as factors, a three-factor and four-level orthogonal experiment was designed to study the welding process of LED fishing lamp shell. According to the scoring standard, the weld forming is graded, and the difference of each factor is compared with the visual analysis method. The influence of each influencing factor on the weld forming is analyzed, and the welding speed in turn from the high to the end is analyzed. The influence of welding current and voltage on weld forming is analyzed, and the optimum technological parameters are determined as follows: welding current 130A, welding voltage 21V, welding speed 0.6m 路min. The best technological parameters were used for welding and sampling, the penetration and width of the weld were measured, and the phase, composition, microstructure, hardness and corrosion resistance of the weld and base metal were studied and analyzed. The base metal is a single austenitic structure and a fiber structure formed by rolling. The weld zone is austenite (10% ~ 13%) ferrite and grows in columnar form along the fusion line. In 316L austenitic stainless steel, the hardness of weld is higher than that of base metal. The corrosion rates of weld and base metal are 0.1814 mm / a and 0.1767 mm / a respectively. The optimum parameters were used to weld the LED fishing lamp shell, and the quality of the shell was tested. The qualified rate was 95%. The results show that the optimal parameter can be used in actual welding and guiding production.
【學(xué)位授予單位】：重慶大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：S972.63;TG44

【相似文獻(xiàn)】

相關(guān)期刊論文 前2條

1 陳耀;遠(yuǎn)洋魷釣與集魚燈開發(fā)[J];光源與照明;2001年01期

2 ;[J];;年期

相關(guān)重要報紙文章 前1條

1 駐普陀記者 劉浩　通訊員 杜雪意 洪佳慧;30組LED集魚燈7個月可省9萬元[N];舟山日報;2012年

相關(guān)碩士學(xué)位論文 前1條

1 姬麗森;LED集魚燈焊接工藝研究[D];重慶大學(xué);2015年

，

本文編號：2433687