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當(dāng)前位置:首頁  >  技術(shù)文章  >  日本FT未來科技洛氏硬度計(jì)基于“兩步壓入法”實(shí)現(xiàn)硬度測量

日本FT未來科技洛氏硬度計(jì)基于“兩步壓入法”實(shí)現(xiàn)硬度測量

更新時(shí)間:2025-12-12      點(diǎn)擊次數(shù):22
  日本FT未來科技洛氏硬度計(jì)基于“兩步壓入法”實(shí)現(xiàn)硬度測量,其核心邏輯是通過壓頭在材料表面形成的壓痕深度反推硬度值。具體流程分為兩個(gè)階段:
 
  初始壓入階段:在初試驗(yàn)力(如98.07N)作用下,壓頭(金剛石圓錐或鋼球)與試樣表面接觸,消除表面不平整對測量結(jié)果的影響。
 
  主壓入與殘余深度測量:施加總試驗(yàn)力(初試驗(yàn)力疊加主試驗(yàn)力,如1471N)后,壓頭進(jìn)一步壓入材料表面,保持規(guī)定時(shí)間后卸除主試驗(yàn)力,僅保留初試驗(yàn)力。此時(shí)材料因彈性回復(fù)產(chǎn)生回彈,測量回彈后的壓痕殘余深度(h)。
 
  硬度值通過公式 HR = N - h/S 計(jì)算,其中:
 
  N 為常數(shù)(金剛石壓頭取100,鋼球壓頭取130);
 
  S 為單位壓痕深度(洛氏硬度取0.002mm,表面洛氏硬度取0.001mm)。
 
  壓痕越淺,計(jì)算出的硬度值越高,反之則越低。這一原理通過壓痕深度與硬度的線性關(guān)系,實(shí)現(xiàn)了硬度值的量化。
 
  日本FT未來科技洛氏硬度計(jì)憑借其特殊的設(shè)計(jì),成為了工業(yè)現(xiàn)場硬度檢測的主要工具,其優(yōu)勢體現(xiàn)在以下方面:
 
  測試流程標(biāo)準(zhǔn)化:從壓頭壓入到殘余深度測量,全程由設(shè)備自動完成,操作人員僅需放置試樣并啟動測試。
 
  直接讀數(shù)功能:通過表盤或數(shù)字顯示屏直接顯示硬度值,無需額外計(jì)算或換算,單次測試耗時(shí)僅數(shù)秒,提升質(zhì)檢效率。例如,在汽車生產(chǎn)線中,可快速檢測大量零部件的硬度,確保生產(chǎn)節(jié)奏。
 
  壓痕尺寸小:壓頭壓入深度通常在毫米級,對試樣表面損傷小,尤其適用于精密零部件的檢測。例如,在航空發(fā)動機(jī)葉片的硬度檢測中,微小壓痕不會影響葉片的氣動性能。
 
  適用薄件檢測:由于試驗(yàn)力較小,可檢測薄板、薄壁管等試樣,避免傳統(tǒng)硬度測試中因試樣變形導(dǎo)致的誤差。
日本FT未來科技洛氏硬度計(jì)
 
  標(biāo)尺多樣化:日本FT未來科技洛氏硬度計(jì)提供了多種標(biāo)尺(如HRC、HRB、HRF等),通過組合不同壓頭(金剛石圓錐、鋼球)和試驗(yàn)力(60kg、100kg、150kg),可覆蓋從軟到硬的材料。例如:
 
  HRC標(biāo)尺:適用于淬火鋼、模具鋼等高硬度材料,檢測刀具硬度是否達(dá)標(biāo);
 
  HRB標(biāo)尺:用于退火態(tài)低碳鋼、鋁合金等中等硬度材料,評估汽車輪轂的強(qiáng)度與韌性;
 
  HRF標(biāo)尺:針對純銅、軟銅合金等低硬度材料,確保電子元件的導(dǎo)電性能。
 
  輕量化設(shè)計(jì):部分型號重量僅3.7kg,配備磁力吸盤后,可直接吸附于鋼板、軸類、模具等曲面(曲率≥Φ50mm),無需移動大型工件。
 
  環(huán)境適應(yīng)性強(qiáng):配備帶燈放大鏡和千分尺式鼓輪讀數(shù)機(jī)構(gòu),即使在車間昏暗環(huán)境下,也能清晰觀察壓痕并精準(zhǔn)讀數(shù),滿足復(fù)雜工業(yè)場景的需求。
 
  精度符合國際標(biāo)準(zhǔn):測試精度符合GB/T230、ISO6508等標(biāo)準(zhǔn),誤差不超過1.5HRC,與臺式硬度計(jì)精度相當(dāng)。
 
  結(jié)構(gòu)穩(wěn)定性強(qiáng):采用剛性結(jié)構(gòu)設(shè)計(jì),減少振動對測試結(jié)果的影響,長期使用仍能保持示值穩(wěn)定,降低維護(hù)成本。
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