1700硬度計(jì) 商品介紹
1965 年面市, 1700 型設(shè)計(jì)用來(lái)使用戶觀測(cè)和測(cè)量有蔓延性的標(biāo)本。蔓延性指的是隨著時(shí)間的推移,持續(xù)觀察標(biāo)本時(shí)硬度計(jì)指示器的讀數(shù)趨勢(shì),會(huì)出現(xiàn)較低的硬度計(jì)讀數(shù)。例如, 如果硬度計(jì)對(duì)著標(biāo)本全面接觸,并持續(xù)施加壓力,在初始數(shù)據(jù)被讀取之后的一段時(shí)間內(nèi),讀數(shù)會(huì)逐漸減少。因此, 一個(gè)具有蔓延性的標(biāo)本, 也許初始讀數(shù)是35.0硬度計(jì)點(diǎn), 讀數(shù)三秒以后也許就變成33.5 硬度計(jì)點(diǎn)。1700型的特點(diǎn)是裝有一只大的指針和一只活動(dòng)指針,這樣蔓延性就可被觀察到。大的指針記住大的讀數(shù)的同時(shí),活躍指針則可記錄刻度下的蔓延性。1700 型在測(cè)量?jī)x的頂部左端裝有一個(gè)大指針重置按鈕。
1700硬度計(jì) 商品特點(diǎn)
保持讀數(shù)直到重新設(shè)置 ;
可讀出大值和蔓延數(shù)值 ;
防誤操作設(shè)置 ;
定制的攜帶式儀器箱 ;
依照ASTM(美國(guó)材料試驗(yàn)協(xié)會(huì)) D-2240 標(biāo)準(zhǔn),來(lái)源于NIST 。
商品參數(shù)
APPLICATIONS | INDENTOR SHAPE | MAIN SPRING | |
TYPE A (ASTM D2240) | Soft rubber, plastics, and elastomers, printer's rolls. | Flat Cone Point 35° Included Angle | 822 GM 1.81 LB. |
TYPE D (ASTM D2240) | Hard rubber and plastics such as thermo plastics, flooring and bowling balls. | Sharp Cone Point 30° Included Angle | 4536 GM 10.0 LB. |
TYPE B (ASTM D2240) | Harder elastomers and plastics. Paper and fibrous materials, Use above 93 Duro A. | Sharp Cone Point 30° Included Angle | 822 GM 1.81 LB |
TYPE C (ASTM D2240) | Medium hard elastomers and plastics. Also useful to avoid surface marks. | Flat Cone Point 35° Included Angle | 4536 GM 10.0 LB |
TYPE DO (ASTM D2240) | Dense granular material, textile windings. | 3/32" Spherical | 4536 GM 10.0 LB |
TYPE O (ASTM D2240) | Very soft elastomers, textile windings, soft granular materials. Use below 20 Duro A. | 3/32" Spherical | 822 GM 1.81 LB |
TYPE OO (ASTM D2240) | Light foams, sponge rubber gels, animal tissue. | 3/32" Spherical | 113 GM |
TYPE OOO (ASTM D2240) | Ultra soft gels and sponge rubber. | 1/2" Spherical | 113 GM |
TYPE M (ASTM D2240) | Materials as thin as .050" | Sharp Cone Point 30° Included Angle | |
廠家介紹
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