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    	<div class="nyNewsDetail_Title"><h1>超声波探伤的优缺点</h1></div>
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            <span><img src="/skins/158899/images/date01.png" />更新时间：2023-06-25</span><span><img src="/skins/158899/images/hit.png" />点击次数：4727</span>
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            <div class="para" label-module="para" data-pid="3" style="overflow-wrap: break-word; color: rgb(51, 51, 51); margin-bottom: 15px; text-indent: 2em; line-height: 24px; zoom: 1; font-family: " helvetica="" pingfang="" hiragino="" sans="" microsoft="" wenquanyi="" micro="" white-space:="" background-color:=""><span style="color: rgb(0, 0, 0);">超声波在介质中传播时有多种波型，检验中常用的为纵波、横波、表面波和板波。用纵波可探测金属铸锭、坯料、中厚板、大型锻件和形状比较简单的制件中所存在的夹杂物、裂缝、缩管、白点、分层等缺陷；用横波可探测管材中的周向和轴向裂缝、划伤、焊缝中的气孔、夹渣、裂缝、未焊透等缺陷；用表面波可探测形状简单的铸件上的</span><span style="color: rgb(0, 0, 0);">表面缺陷</span><span style="color: rgb(0, 0, 0);">；用板波可探测薄板中的缺陷。</span></div><p style="position: relative; color: rgb(51, 51, 51); font-family: "><span style="color: rgb(0, 0, 0); font-family: " microsoft="" font-size:="">主</span><span style="color: rgb(0, 0, 0); font-family: " microsoft="" font-size:="">要特性</span></p><p style="position: relative; color: rgb(51, 51, 51); font-family: "><a class="audio-play part-audio-play J-part-audio-play" style="height: 22px; line-height: 22px; padding-left: 24px; font-family: SimSun; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; outline: 0px; color: rgb(0, 0, 0); text-decoration: underline; display: inline !important;"><span style="height: 22px; line-height: 22px; padding-left: 24px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; outline: 0px; font-size: 14px;">超探仪是一种便携式工业无损探伤仪器，它能够快速便捷、无损伤、精确地进行工件内部多种缺陷（裂纹、夹杂、折叠、气孔、砂眼等）的检测、定位、评估和诊断。</span></a></p><div class="para" label-module="para" data-pid="6" style="overflow-wrap: break-word; color: rgb(51, 51, 51); margin-bottom: 15px; text-indent: 2em; line-height: 24px; zoom: 1; font-family: " helvetica="" pingfang="" hiragino="" sans="" microsoft="" wenquanyi="" micro="" white-space:="" background-color:=""><span style="color: rgb(0, 0, 0);">既可以用于实验室，也可以用于工程现场。本仪器能够广泛地应用在制造业、钢铁冶金业、金属加工业、化工业等需要缺陷检测和质量控制的领域，也广泛应用于航空航天、铁路交通、锅炉压力容器等领域的在役安全检查与寿命评估。它是无损检测行业</span>。</div><div class="para" label-module="para" data-pid="7" style="overflow-wrap: break-word; color: rgb(51, 51, 51); margin-bottom: 15px; text-indent: 2em; line-height: 24px; zoom: 1; font-family: " helvetica="" pingfang="" hiragino="" sans="" microsoft="" wenquanyi="" micro="" white-space:="" background-color:=""><span style="color: rgb(0, 0, 0);">1.超声波在介质中传播时，在不同质界面上具有反射的特性，如遇到缺陷，缺陷的尺寸等于或大于超声波波长时，则超声波在缺陷上反射回来，探伤仪可将反射波显示出来；如缺陷的尺寸甚至小于波长时，声波将绕过缺陷而不能反射；</span></div><div class="para" label-module="para" data-pid="8" style="overflow-wrap: break-word; color: rgb(51, 51, 51); margin-bottom: 15px; text-indent: 2em; line-height: 24px; zoom: 1; font-family: " helvetica="" pingfang="" hiragino="" sans="" microsoft="" wenquanyi="" micro="" white-space:="" background-color:=""><span style="color: rgb(0, 0, 0);">2.波声的指向性好，频率越高，指向性越好，以很窄的波束向介质中辐射，易于确定缺陷的位置.</span></div><div class="para" label-module="para" data-pid="9" style="overflow-wrap: break-word; color: rgb(51, 51, 51); margin-bottom: 15px; text-indent: 2em; line-height: 24px; zoom: 1; font-family: " helvetica="" pingfang="" hiragino="" sans="" microsoft="" wenquanyi="" micro="" white-space:="" background-color:=""><span style="color: rgb(0, 0, 0);">3.超声波的传播能量大，如频率为1MHZ（1兆赫兹）的超声波所传播的能量，相当于振幅相同而频率为1000HZ（赫兹）的声波的100万倍。</span></div><div class="anchor-list " style="position: relative; color: rgb(51, 51, 51); font-family: " helvetica="" pingfang="" hiragino="" sans="" microsoft="" wenquanyi="" micro="" font-size:="" white-space:="" background-color:=""><span style="color: rgb(0, 0, 0); font-size: 14px; font-family: " microsoft="">主要优点</span><a class="audio-play part-audio-play J-part-audio-play" style="height: 22px; line-height: 22px; padding-left: 24px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; outline: 0px; color: rgb(0, 0, 0); font-family: arial, helvetica, sans-serif; text-decoration: underline; display: inline !important;"><span style="font-family: arial, helvetica, sans-serif;">①穿透能力强，探测深度可达数米；</span></a></div><div class="para" label-module="para" data-pid="12" style="overflow-wrap: break-word; color: rgb(51, 51, 51); margin-bottom: 15px; text-indent: 2em; line-height: 24px; zoom: 1; font-family: " helvetica="" pingfang="" hiragino="" sans="" microsoft="" wenquanyi="" micro="" white-space:="" background-color:=""><span style="color: rgb(0, 0, 0);">②灵敏度高，可发现与直径约十分之几毫米的空气隙反射能力相当的反射体；可检测缺陷的大小通常可以认为是波长的1/2。</span></div><div class="para" label-module="para" data-pid="13" style="overflow-wrap: break-word; color: rgb(51, 51, 51); margin-bottom: 15px; text-indent: 2em; line-height: 24px; zoom: 1; font-family: " helvetica="" pingfang="" hiragino="" sans="" microsoft="" wenquanyi="" micro="" white-space:="" background-color:=""><span style="color: rgb(0, 0, 0);">③在确定内部反射体的位向、大小、形状及等方面较为准确；</span></div><div class="para" label-module="para" data-pid="14" style="overflow-wrap: break-word; color: rgb(51, 51, 51); margin-bottom: 15px; text-indent: 2em; line-height: 24px; zoom: 1; font-family: " helvetica="" pingfang="" hiragino="" sans="" microsoft="" wenquanyi="" micro="" white-space:="" background-color:=""><span style="color: rgb(0, 0, 0);">④仅须从一面接近被检验的物体；</span></div><div class="para" label-module="para" data-pid="15" style="overflow-wrap: break-word; color: rgb(51, 51, 51); margin-bottom: 15px; text-indent: 2em; line-height: 24px; zoom: 1; font-family: " helvetica="" pingfang="" hiragino="" sans="" microsoft="" wenquanyi="" micro="" white-space:="" background-color:=""><span style="color: rgb(0, 0, 0);">⑤可立即提供缺陷检验结果;</span></div><div class="para" label-module="para" data-pid="16" style="overflow-wrap: break-word; color: rgb(51, 51, 51); margin-bottom: 15px; text-indent: 2em; line-height: 24px; zoom: 1; font-family: " helvetica="" pingfang="" hiragino="" sans="" microsoft="" wenquanyi="" micro="" white-space:="" background-color:=""><span style="color: rgb(0, 0, 0);">⑥操作安全,设备轻便。</span></div><div class="anchor-list " style="position: relative; color: rgb(51, 51, 51); font-family: " helvetica="" pingfang="" hiragino="" sans="" microsoft="" wenquanyi="" micro="" font-size:="" white-space:="" background-color:=""><span style="color: rgb(0, 0, 0); font-size: 14px; font-family: " microsoft="">主要缺点</span></div><div class="para" label-module="para" data-pid="18" style="overflow-wrap: break-word; color: rgb(51, 51, 51); margin-bottom: 15px; text-indent: 2em; line-height: 24px; zoom: 1; font-family: " helvetica="" pingfang="" hiragino="" sans="" microsoft="" wenquanyi="" micro="" white-space:="" background-color:=""><span style="color: rgb(0, 0, 0);">①要由有经验的人员谨慎操作；</span></div><div class="para" label-module="para" data-pid="19" style="overflow-wrap: break-word; color: rgb(51, 51, 51); margin-bottom: 15px; text-indent: 2em; line-height: 24px; zoom: 1; font-family: " helvetica="" pingfang="" hiragino="" sans="" microsoft="" wenquanyi="" micro="" white-space:="" background-color:=""><span style="color: rgb(0, 0, 0);">②对粗糙、形状不规则、小、薄或非均质材料难以检查；</span></div><div class="para" label-module="para" data-pid="20" style="overflow-wrap: break-word; color: rgb(51, 51, 51); margin-bottom: 15px; text-indent: 2em; line-height: 24px; zoom: 1; font-family: " helvetica="" pingfang="" hiragino="" sans="" microsoft="" wenquanyi="" micro="" white-space:="" background-color:=""><span style="color: rgb(0, 0, 0);">③对所发现缺陷作十分准确的定性、定量表征仍有困难；</span></div><div class="para" label-module="para" data-pid="21" style="overflow-wrap: break-word; color: rgb(51, 51, 51); margin-bottom: 15px; text-indent: 2em; line-height: 24px; zoom: 1; font-family: " helvetica="" pingfang="" hiragino="" sans="" microsoft="" wenquanyi="" micro="" white-space:="" background-color:=""><span style="color: rgb(0, 0, 0);">④. 不适合有空腔的结构；</span></div><div class="para" label-module="para" data-pid="22" style="overflow-wrap: break-word; color: rgb(51, 51, 51); margin-bottom: 15px; text-indent: 2em; line-height: 24px; zoom: 1; font-family: " helvetica="" pingfang="" hiragino="" sans="" microsoft="" wenquanyi="" micro="" white-space:="" background-color:=""><span style="color: rgb(0, 0, 0);">⑤. 除非拍照，一般少有留下追溯性材料。</span></div><p><br/></p><p><br/></p> 
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