T-CITS 0003-2024 起重機(jī)滑輪質(zhì)量分級(jí)評(píng)價(jià)規(guī)范

CITST/CITS0003—2024起重機(jī)滑輪質(zhì)量分級(jí)評(píng)價(jià)規(guī)范Specificationforqualitygradingevaluationofcranepulleys2024-02-02發(fā)布2024-02-02實(shí)施中國(guó)檢驗(yàn)檢測(cè)學(xué)會(huì)發(fā)布I 4 本文件按照GB/T1.1—2020《標(biāo)準(zhǔn)化石祥通、趙凱、黃程瑜、汪洋、熊維瓊、姜明峰、李維維、錢心怡、汪1GB/T131-2006產(chǎn)品幾何技術(shù)規(guī)范技術(shù)產(chǎn)品文件中GB/T1036塑料-30℃~30℃GB/T1040.2塑料拉伸性能的測(cè)定第2部分：模塑和GB/T6379.1測(cè)量方法與結(jié)果的準(zhǔn)確度（正確度與精密度）第1GB/T34529-2017起重機(jī)和葫蘆鋼絲繩GB/T131-2006、GB/T3.1滑輪質(zhì)量分級(jí)pulleyquality3.2用于各項(xiàng)試驗(yàn)、檢測(cè)，包括原設(shè)備或者部分的樣品4.2通用要求4.2.1從滑輪母材性能、外觀質(zhì)量、表面硬度4.2.3鑄造件的加工表面不應(yīng)有砂眼、氣孔、疏松、裂紋等缺陷，非加工表面不應(yīng)有裂紋、砂眼和明24.3質(zhì)量分級(jí)4.3.2基本程序合同中明確所申報(bào)滑輪的質(zhì)量等級(jí)。檢驗(yàn)檢測(cè)機(jī)構(gòu)依據(jù)試驗(yàn)項(xiàng)目和綜合判定方法計(jì)算出滑輪的綜合質(zhì)量得分。出具滑輪質(zhì)量分級(jí)檢驗(yàn)檢測(cè)記錄、報(bào)告?；嗁|(zhì)量分級(jí)評(píng)價(jià)的一般4.4.1鑄造碳鋼CSPV3表2鑄造碳鋼力學(xué)性能(≥)ReH(Rp0.2)/MpaRm/MpaA5/%Z/%Akv/J4.4.2灰鑄鐵tmmRmMpa>≤≥≤≥5-5 -4.4.3結(jié)構(gòu)鋼CPSBF、Z表5結(jié)構(gòu)鋼力學(xué)性能(≥)屈服強(qiáng)度ReH/(N/mm2)Rm/(N/mm2)斷后伸長(zhǎng)率A/%~>16~~>40~~>60~>~~>~~>>>>℃功JBCPS4mmRmMpa度ReLMpa率Z?%功KU2?J≥≤4.4.5非金屬材質(zhì)4.4.5.2應(yīng)包括拉伸性能、彎曲性能鋼絲繩在滑輪表面線速度m?sHRC28~HRC36HRC40~HRC45HRC45~HRC55HRC55~HRC60HRC60~HRC70HRC70~HRC80輪廓的算數(shù)平均偏差Ra050505輪廓的算數(shù)平均偏差Ra5024表11槽底半徑r的極限偏差與質(zhì)量得分槽底半徑r項(xiàng)目質(zhì)量得分d2—0—40—8040080400804008040080+0.2540086.2.1.1測(cè)量滑輪輪轂孔的圓柱度t1，與依據(jù)公式（1）計(jì)算的允許值t1允進(jìn)行比較。6滑輪輪轂孔的圓柱度t1與t1允的百分比項(xiàng)目質(zhì)量得分d3t1=(0.85~1.00)t1允0t1=(0.65~0.85)t1允5t1<0.65t1允滑輪繩槽半徑線輪廓度t2與繩槽半徑極限項(xiàng)目質(zhì)量得分d4t2=(0.85~1.00)t2允0t2=(0.55~0.85)t2允5t2<0.50t2允6.4槽底圓跳動(dòng)公差t36.4.1.1測(cè)量滑輪繩槽底圓跳動(dòng)公差t3，與依據(jù)公式（3）計(jì)算的允許值t3允1進(jìn)行比較。t3允1=min{D?00····························································滑輪繩槽底圓跳動(dòng)t3與t3允1的百分比項(xiàng)目質(zhì)量得分d5t3=(0.75~1.00)t3允0t3=(0.55~0.75)t3允5t3<0.55t3允6.4.2.1測(cè)量滑輪繩槽底圓跳動(dòng)公差t3，與依據(jù)公式（4）計(jì)算的允許值t3允2進(jìn)行比較。t3允2=2.5D?1000············································滑輪繩槽底圓跳動(dòng)t3與t3允1的百分比項(xiàng)目質(zhì)量得分d6t3=(0.65~1.00)t3允0t3=(0.35~0.65)t3允5t3<0.35t3允7滑輪繩槽側(cè)向圓跳動(dòng)公差t4的測(cè)量位置距離滑輪邊緣10mmGB/T27546-2011）繩槽側(cè)向圓跳動(dòng)滑輪直徑D(mm)繩槽側(cè)向圓跳動(dòng)t4項(xiàng)目質(zhì)量得分d70505050505056.6滑輪直徑D滑輪直徑D的極限偏差與質(zhì)量得分評(píng)價(jià)，如表17所示。表17滑輪直徑D的極限偏差與質(zhì)量得分項(xiàng)目質(zhì)量得分d805050505058項(xiàng)目質(zhì)量得分d805056.7滑輪寬度B表18滑輪寬度B的極限偏差與質(zhì)量得分05050505滑輪外圓D1項(xiàng)目質(zhì)量得分d100408049滑輪外圓D1項(xiàng)目質(zhì)量得分d1008