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加长臂焊接变形的缘故缘故原因是什么?

日期:2019-02-19   源头:http://www.degradedijital.com/
南方双彩网都知道挖掘机的紧张布局件是加长臂,一样伟大都是运用焊接工艺。加长臂颠末焊接加工会发生一定的外形革新,即焊接变形,这会告急影响构件前期运用的结果。那么加长臂焊接变形的紧张情势及孕育发生缘故缘故原因是什么呢?今天,挖掘机加长臂厂家就带您一同来学习以下相关内容!
  We all know that the main structural parts of excavators are elongated arms, which are usually welded. The elongated arm will change its shape after welding, that is, welding deformation, which will seriously affect the effect of later use of components. So what are the main forms and causes of welding deformation of elongated arms? Today, excavator lengthening arm manufacturers will take you to learn the following related content!
  加长臂焊策运用钢板厚度大局部在4~100mm之间,板厚规格跨度十分大,相应所采取的焊接工艺参数改造范围较大,招致焊接热出入及焊接热温度场的不匀称。因此要是在焊接进程中控制不当,焊接变形会很大,告急影响了挖掘机加长臂的加工质量以及零件的装置性。变形的基本模范有横向、纵向紧缩,角变形,弯曲和波浪变形。
  The thickness of the steel plate used in the elongated arm welding is mostly between 4 and 100 mm, and the gauge span of the plate thickness is very large. The welding process parameters adopted correspondingly vary widely, which results in the uneven heat input and exit of the welding and the thermal temperature field of the welding. Therefore, if the welding process is not properly controlled, the welding deformation will be very large, which seriously affects the processing quality of the excavator's elongated arm and the assembly of the whole machine. The basic types of deformation are transverse and longitudinal contraction, angular deformation, bending and wave deformation.
  挖掘机布局件孕育发生焊接变形的紧张缘故缘故原因有:
  The main reasons for welding deformation of excavator structural parts are as follows:
  (1)布局型式设计不当,焊接时容易发生变形;
  (1) Structural design is inappropriate and easy to deform during welding.
  (2)焊接讨论的型式、焊缝陈设差异理;
  (2) The type of welding joint and the arrangement of welding seam are unreasonable.
加长臂挖掘机出租
  (3)控制焊接变形的工艺要领运用不当。
  (3) improper application of process methods to control welding deformation.
  敷衍控制挖掘机加长臂焊接变形的技术要领:
  For the technical method of controlling the welding deformation of the elongated arm of excavator:
  (1)采取焊接变形控制技术
  (1) Welding Deformation Control Technology
  公允选择施焊要领和焊接工艺参数,应围绕布局中性轴平衡陈设焊缝,公允选择焊接序次,运用分段生长焊和中缀焊,预置反变形量,采取刚性壮实等。对曾经出现的变形常采取呆板矫正和火焰矫正法,这些变形防范步谐和矫正工艺紧张是寄予阅历和有限的实行数据,不克不及顺应庞大多变的布局型式和焊接要领,并且焊接变形的矫正极为耗时、费力,致使招致南方双彩网产品报废。
  Reasonable selection of welding methods and welding parameters should be based on balanced arrangement of welds around the neutral axis of the structure, rational selection of welding sequence, use of step backward welding and intermittent welding, pre-set reverse deformation, rigid fixing, etc. Mechanical and flame correction methods are often used to correct the existing deformation. These deformation prevention measures and correction techniques mainly rely on experience and limited experimental data, and can not adapt to complex and changeable structural types and welding methods. Moreover, the correction of welding deformation is time-consuming and laborious, and even leads to the scrap of products.
  (2)运用焊接变形预测要领
  (2) Application of Welding Deformation Prediction Method
  焊接数值模拟可颠末对庞大或不可观察的焊接征象举行模拟和对十分环境下尚不知的端正举行预测,以弄清焊接进程的规律。数值模拟作为一种强有力的定量研讨技艺,不但可以用来资助明白焊接征象的实质,预测渣滓应力和变形,还可以此为东西,研讨控制和减小渣滓应力,优化焊缝质量。
  The numerical simulation of welding can make clear the rule of welding process by simulating complex or unobservable welding phenomena and predicting unknown rules in extreme cases. As a powerful quantitative research tool, numerical simulation can not only help to understand the nature of welding phenomena and predict residual stress and deformation, but also be used as a tool to study the control and reduction of residual stress and optimize the quality of weld.
  更多加长臂挖掘机出租的相关内容可以点击南方双彩网的官网举行咨询:http://www.degradedijital.com/
  For more information on rental of elongated-arm excavators, please click on our website: http://www.degradedijital.com/

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