Bewise Inc. www.tool-tool.com Reference source from the internet.

实验步骤及方法:

1)选定压头及载荷按表1-2选择测量规范。

2)试样应平整、无油污、无氧化物及明显加工痕迹。

3)试样厚度不小于压入深度的十倍。

4)打硬度点处两相邻压痕及压痕离试样边缘之距不小于3mm。

5)加预载荷。

6)加载荷(150kg),保载荷15-20秒后卸载。

7)卸载后在洛氏硬度计上直接读HRC数值。

实验图象说明:

布洛维硬度计
 

洛氏硬度计算公式:



式中:

h1:为预加载荷压入试样的深度(mm)。

h3:为卸除主载荷后压入试样的深度(mm)。

k:为常数(1200金刚 石圆锥 k=0.2;钢球时 HRB k=0.26 )

 

氏硬度计算公式:

式中:

h1:为预加载荷压入试样的深度(mm)。

h3:为卸除主载荷后压入试样的深度(mm)。

k:为常数(1200金刚 石圆锥 k=0.2;钢球时 HRB k=0.26

 



读数说明(左)

上图静态说明:


符合 压头 负荷kgf 硬度只值的范围 使用范围
HRA 1200金刚石圆锥 60

>70
测硬度合金、 淬火层、渗碳层、气化层等零部件
HRB Ф2.5或Ф5钢球 100

25--100

(HB60-230)
测有色金属、退火、正火、回火等零部件
HRC 1200金刚石圆锥 150

20-67

(HB230-700)
测调质钢、 淬火钢等零部件

BW Bewise Inc. Willy Chen willy@tool-tool.com bw@tool-tool.com www.tool-tool.com skype:willy_chen_bw mobile:0937-618-190 Head &Administration Office No.13,Shiang Shang 2nd St., West Chiu Taichung,Taiwan 40356 TEL:+886 4 24710048 / FAX:+886 4 2471 4839 N.Branch 5F,No.460,Fu Shin North Rd.,Taipei,Taiwan S.Branch No.24,Sec.1,Chia Pu East Rd.,Taipao City,Chiayi Hsien,Taiwan

Welcome to BW tool world! We are an experienced tool maker specialized in cutting tools. We focus on what you need and endeavor to research the best cutter to satisfy users demand. Our customers involve wide range of industries, like mold & die, aerospace, electronic, machinery, etc. We are professional expert in cutting field. We would like to solve every problem from you. Please feel free to contact us, its our pleasure to serve for you. BW product including: cutting toolaerospace tool .HSS Cutting toolCarbide end millsCarbide cutting toolNAS Cutting toolCarbide end millAerospace cutting toolФрезерыCarbide drillHigh speed steelMilling cutterCVDD(Chemical Vapor Deposition Diamond )PCBN (Polycrystalline Cubic Boron Nitride) Core drillTapered end millsCVD Diamond Tools Inserts’PCD Edge-Beveling Cutter(Golden Finger’PCD V-Cutter’PCD Wood tools’PCD Cutting tools’PCD Circular Saw Blade’PVDD End Mills’diamond tool Single Crystal Diamond Metric end millsMiniature end millsСпециальные режущие инструменты Пустотелое сверло Pilot reamerFraisesFresas con mango PCD (Polycrystalline diamond) FreseElectronics cutterStep drillMetal cutting sawDouble margin drillGun barrelAngle milling cutterCarbide burrsCarbide tipped cutterChamfering toolIC card engraving cutterSide cutterNAS toolDIN toolSpecial toolMetal slitting sawsShell end millsSide and face milling cuttersSide chip clearance sawsLong end millsStub roughing end millsDovetail milling cuttersCarbide slot drillsCarbide torus cuttersAngel carbide end millsCarbide torus cuttersCarbide ball-nosed slot drillsMould cutterTool manufacturer.

Bewise Inc. www.tool-tool.com

BW специализируется в научных исследованиях и разработках, и снабжаем самым высокотехнологичным карбидовым материалом для поставки режущих / фрезеровочных инструментов для почвы, воздушного пространства и электронной индустрии. В нашу основную продукцию входит твердый карбид / быстрорежущая сталь, а также двигатели, микроэлектрические дрели, IC картонорезальные машины, фрезы для гравирования, режущие пилы, фрезеры-расширители, фрезеры-расширители с резцом, дрели, резаки форм для шлицевого вала / звездочки роликовой цепи, и специальные нано инструменты. Пожалуйста, посетите сайт www.tool-tool.com для получения большей информации.

BW is specialized in R&D and sourcing the most advanced carbide material with high-tech coating to supply cutting / milling tool for mould & die, aero space and electronic industry. Our main products include solid carbide / HSS end mills, micro electronic drill, IC card cutter, engraving cutter, shell end mills, cutting saw, reamer, thread reamer, leading drill, involute gear cutter for spur wheel, rack and worm milling cutter, thread milling cutter, form cutters for spline shaft/roller chain sprocket, and special tool, with nano grade. Please visit our web www.tool-tool.com for more info.
arrow
arrow
    全站熱搜

    beeway 發表在 痞客邦 留言(0) 人氣()