耐火砖形状尺寸第6部分回转窑用砖(征求意见稿)doc

1、时间就是金钱，效率就是生命！ICS备案号：GB中 华 人 民 共 和 国 国 家 标 准GB/T ××××-××××代替GB/T 17912-1999 耐火砖形状尺寸第6部分：回转窑用砖Dimensions of refractory bricks -Part 6：Specification for bricks for use in rotary kilns（征求意见稿）200× -××-××发布 200× -××-×

2、15;实施中华人民共和国国家国家质量监督检验检疫总局 发 布中 国 国 家 标 准 化 管 理 委 员 会GB/T ××××-×××× 前 言本部分为GB/T 2992的第6部分。本部分代替GB/T 17912-1999回转窑用耐火砖形状尺寸。本次修订与GB/T 17912-1999相比主要变化如下：修改了本部分适用范围到水泥回转窑、活性石灰、轻烧白云石回转窑、耐火原料回转窑、含铁球团回转窑及有色冶金回转窑等；增加了“等楔差尺寸回转窑用砖”、“回转窑专用锁砖”的术语及定义；修改了尺寸砖号及尺寸规格；修改了等中间尺寸

3、75mm回转窑用砖；增加了等大端尺寸100mm回转窑用砖；增加了回转窑专用锁砖；采用了等楔差尺寸回转窑用砖及其双楔形砖砖环；修改了本部分回转窑用砖及窑衬配砌方案设计计算，并设置为附录A。本部分非等效采用了国际标准ISO 5417: 1986回转窑用耐火砖尺寸。本部分由全国耐火材料标准化技术委员会归口。本部分起草单位： 武汉钢铁（集团）公司、冶金工业信息标准研究院本部分主要起草人：本标准所代替标准的历次版本发布情况为：-GB/T 17912-1999GB/T ××××-××××耐火砖形状尺寸第6部分：回转窑用砖1 范

4、围 GB/T 2992的本部分规定了回转窑用砖的术语和定义、尺寸砖号、尺寸规格、尺寸、尺寸特征及窑衬配砌方案设计计算。 本部分适用于水泥回转窑、活性石灰、轻烧白云石回转窑、耐火原料回转窑、含铁球团回转窑及有色冶金回转窑筒体工作衬。2 术语和定义本部分采用下列术语和定义。2.1回转窑用砖 bricks for use in rotary kilns; bricks for rotary kilns指回转窑用厚楔形砖，即回转窑筒体专用的大小端距离A设计在长度上、大小端尺寸C/D设计在厚度上的楔形砖，见图1。图1 回转窑用砖2.2等大端尺寸回转窑用砖 bricks for use in rotary

5、 kilns with constant backface dimension；bricks for rotary kilns with constant backface dimension大端尺寸C都相等的回转窑用砖。2.3等中间尺寸回转窑用砖 bricks for use in rotary kilns with constant median taper dimension；bricks for rotary kilns with constant median taper dimension大小端平均尺寸即中间尺寸P=(C+D)/2都相等的回转窑用砖。2.4等楔差尺寸回转窑用砖 br

6、icks for use in rotary kiln with constant taper dimension；bricks for rotary kilns with constant taper dimension楔差CD都相等的回转窑用砖。2.5回转窑专用锁砖 special closure bricks for use in rotary kilns；special closure bricks for rotary kilns回转窑砖衬砌筑中最后封闭砖环（锁缝）的楔形砖。3 尺寸砖号及尺寸规格 3.1尺寸砖号表示法3.1.1国际标准尺寸砖号表示法（表1和表2）回转窑用砖的尺寸砖号

7、由字母和数字组成：末两位数表示该砖大小端距离A的厘米数，其前的数字表示该砖标称外直径的米数；数字前的字母A、B分别表示等大端尺寸103mm、等中间尺寸71.5mm。3.1.2表3、表4和表5的砖号表示法等中间尺寸75mm回转窑用砖（表3）、等大端尺寸100mm回转窑用砖（表4）和回转窑专用锁砖（表5）的尺寸砖号，由名称代号H（“厚”的汉语拼音首字母）、大小端距离A的厘米数、短横线“-”和大小端厚度尺寸C/D的毫米数组成。3.2尺寸规格表示法回转窑用砖的尺寸规格（mm）以A×(C/D)×B表示。4 砖的尺寸及尺寸特征4.1 等大端尺寸103mm回转窑用砖的尺寸及尺寸特征见表1

8、。4.2 等中间尺寸71.5mm回转窑用砖的尺寸及尺寸特征见表2。4.3 等中间尺寸75mm回转窑用砖的尺寸及尺寸特征见表3。4.4 等大端尺寸100mm回转窑用砖的尺寸及尺寸特征见表4。4.5 回转窑专用锁砖的尺寸及尺寸特征见表5。表1 等大端尺寸103mm回转窑用砖尺寸砖号尺 寸mm单位楔差外直径（mm）每环极限砖数，块体积cm3AC/DB1 mm2 mmA216160103/86.01980.10631957.61976.559.1362993.8A316103/92.00.06883025.53054.591.3923088.8A416103/94.50.05313915.33952.

9、9118.2723128.4A516103/96.50.04065120.05169.2154.6633160.1A716103/98.30.02947080.97148.9213.8963188.6A218180103/84.01980.10561970.51989.559.5253332.3A318103/90.50.06942995.23024.090.4783448.2A418103/93.50.05283941.13978.9119.0503501.6A518103/95.50.04174992.05040.0150.7963537.3A618103/97.00.03336240.0

10、6300.0188.4963564.0A718103/97.70.02947064.27132.1213.3913576.5A220200103/82.01980.10501981.02000.059.8403663.0A320103/89.00.07002971.43000.089.7603801.6A420103/92.50.05253961.94000.0119.6803870.9A520103/94.70.04155012.05060.2151.4023914.5A620103/96.20.03406117.66176.5184.8003944.2A720103/97.00.03006

11、933.37000.0209.4403960.0A820103/97.80.02608000.08076.9241.6623975.8A322220103/88.01980.06823050.73080.092.1544160.0A422103/91.50.05233979.14017.4120.2004236.2A522103/94.00.04095084.45133.3153.5894290.7A622103/95.50.03416101.36160.0184.3074323.3A722103/96.50.02957040.07107.7212.6624345.1A822103/97.30

12、.02598028.18105.3242.5094362.5A425250103/90.01980.05204000.04038.5120.8314776.8A525103/92.70.04125048.55097.1152.5044843.6A625103/94.50.03406117.66176.5184.8004888.1A725103/95.50.03006933.37000.0209.4404912.9A825103/96.50.02608000.08076.9241.6614937.6 注：1、表示砌缝（辐射缝）厚度，mm。取值为3.1416。 2、本表用砖尺寸取自ISO5417:

13、1986。尺寸特征为本标准计算值。 3、本表适用于非碱性砖。表2 等中间尺寸71.5mm回转窑用砖尺寸砖号尺 寸mm单位楔差外直径（mm）每环极限砖数，块体积cm3AC/DB1 mm2 mmB21616078.0/65.01980.08131944.61969.277.3322265.1B41675.0/68.00.04383474.33520.0143.616B21818078.0/65.01980.07222187.72215.486.9982548.3B31876.5/66.50.05562790.02826.0113.098B41875.0/68.00.03893908.63960.0

14、161.568B51874.5/68.50.03334530.04590.0188.496B61874.0/69.00.02785400.05472.0226.195B22020078.0/65.01980.06502430.82461.596.6652831.4B32076.5/66.50.05003100.03140.0125.664B42075.0/68.00.03504342.94400.0179.520B52074.5/68.50.03005033.35100.0209.440B62074.0/69.00.02506000.06080.0251.328B22222078.0/65.0

15、1980.05912673.82707.7106.3313114.5B32276.5/66.50.04553410.03454.0138.230B42275.0/68.00.03184777.14840.0197.472B52274.5/68.50.02735536.75610.0230.384B62274.0/69.00.02276600.06688.0276.461B32525078.0/65.01980.05203038.53076.9120.8313539.3B42576.5/66.50.04003875.03925.0157.080B52575.0/68.00.02805428.65

16、500.0224.400B62574.5/68.50.02406291.76375.0261.800B72574.0/69.00.02007500.07600.0314.160 注：1、表示砌缝（辐射缝）厚度，mm。取值为3.1416。 2、本表用砖尺寸取自ISO5417:1986。尺寸特征为本标准计算值。 3、本表适用于碱性砖。表3 等中间尺寸75mm回转窑用砖尺寸砖号尺 寸mm单位楔差外直径（mm）每环极限砖数，块体积cm3AC/DB1 mm2 mmH16-82.5/67.516082.5/67.51980.09381781.31802.767.0212376.0H16-80.0/70.0

17、80.0/70.00.06252592.02624.0100.531H16-78.8/71.378.8/71.30.04693402.73445.3134.042H16-77.5/72.577.5/72.50.03135024.05088.0201.062H18-82.5/67.518082.5/67.51980.08332004.02028.075.3982673.0H18-80.0/70.080.0/70.00.05562916.02952.0113.098H18-78.8/71.378.8/71.30.04173828.03876.0150.797H18-77.5/72.577.5/72

18、.50.02785652.05724.0226.195H20-82.5/67.520082.5/67.51980.07502226.72253.383.7762970.0H20-80.0/70.080.0/70.00.05003240.03280.0125.664H20-78.8/71.378.8/71.30.03754253.34306.7167.552H20-77.5/72.577.5/72.50.02506280.06360.0251.328H22-82.5/67.522082.5/67.51980.06822449.32478.792.1543267.0H22-80.0/70.080.

19、0/70.00.04553564.03608.0138.230H22-78.8/71.378.8/71.30.03414678.74737.3184.307H22-77.5/72.577.5/72.50.02276908.06996.0276.461H25-82.5/67.525082.5/67.51980.06002783.32816.7104.7203712.5H25-80.0/70.080.0/70.00.04004050.04100.0157.080H25-78.8/71.378.8/71.30.03005316.75383.3209.440H25-77.5/72.577.5/72.5

20、0.02007850.07950.0314.160 注：1、H16-78.8/71.3、H18-78.8/71.3、H20-78.8/71.3、H22-78.8/71.3、H25-78.8/71.3的大小端尺寸（mm）C/D为78.8/71.3，其设计尺寸为78.75/71.25。上述砖号外直径及体积计算中采用设计尺寸78.75/71.25。 2、表示砌缝（辐射缝）厚度，mm。取值为3.1416。 3、本表适用于碱性砖。表4 等大端尺寸100mm回转窑用砖尺寸砖号尺 寸mm单位楔差外直径（mm）每环极限砖数，块体积cm3AC/DB1 mm2 mmH16-100/85.0160100/85.01

21、980.09382154.72176.067.0212930.4H16-100/90.0100/90.00.06253232.03264.0100.5313009.6H16-100/92.5100/92.50.04694309.34352.0134.0423049.2H16-100/95.0100/95.00.03136464.06528.0201.0623088.8H18-100/85.0180100/85.01980.08332424.02448.075.3983296.7H18-100/90.0100/90.00.05563636.03672.0113.0983385.8H18-100/

22、92.5100/92.50.04174848.04896.0150.7973430.4H18-100/95.0100/95.00.02787272.07344.0226.1953474.9H20-100/85.0200100/85.01980.07502693.32720.083.7763663.0H20-100/90.0100/90.00.05004040.04080.0125.6643762.0H20-100/92.5100/92.50.03755386.75440.0167.5523811.5H20-100/95.0100/95.00.02508080.08160.0251.328386

23、1.0H22-100/85.0220100/85.01980.06822962.72992.092.1544029.3H22-100/90.0100/90.00.04554444.04488.0138.2304138.2H22-100/92.5100/92.50.03415925.35984.0184.3074192.7H22-100/95.0100/95.00.02278888.08976.0276.4614247.1H25-100/85.0250100/85.01980.06003366.73400.0104.7204578.8H25-100/90.0100/90.00.04005050.

24、05100.0157.0804702.5H25-100/92.5100/92.50.03006733.36800.0209.4404764.4H25-100/95.0100/95.00.020010100.010200.0314.1604826.3 注：1、表示砌缝（辐射缝）厚度，mm。取值为3.1416。 2、本表适用于非碱性砖。表5 回转窑专用锁砖尺寸砖号尺 寸mm单位楔差外直径每环极限砖数，块体积cm3AC/DB1 mm2 mmH16-89.5/79.816089.5/79.81980.0625 2905.62937.6100.5312686.5H16-120.4/112.9120.4/

25、112.90.0469 5179.75222.4134.0423695.5H16-120.4/115.4120.4/115.40.0313 7769.67833.6201.0623735.1H18-89.5/79.818089.5/79.81980.05563268.83304.8113.0983022.3H18-120.4/112.9120.4/112.90.04175827.25875.2150.7974157.4H18-120.4/115.4120.4/115.40.02788740.88812.8226.1954202.0H20-89.5/79.820089.5/79.81980.05

26、003632.03672.0125.6643358.1H20-120.4/112.9120.4/112.90.03756474.76528.0167.5524619.3H20-120.4/115.4120.4/115.40.02509712.09792.0251.3284668.8H22-89.5/79.822089.5/79.81980.04553995.2 4039.2138.2303693.9H22-120.4/112.9120.4/112.90.03417122.17180.8184.3075081.3H22-120.4/115.4120.4/115.40.022710683.2107

27、71.2276.4615135.7H25-89.5/79.825089.5/79.81980.04004540.04590.0157.0804197.6H25-120.4/112.9120.4/112.90.03008093.38160.0209.4405774.2H25-120.4/115.4120.4/115.40.0200 12140.012240.0314.1605836.1H16-71.8/61.816071.8/61.81980.06252329.62361.6100.5312116.2H16-119.1/111.6119.1/111.60.04695125.35168.0134.

28、0423654.3H16-104.0/99.0104.0/99.00.03136720.06784.0201.0623215.5H18-71.8/61.818071.8/61.81980.05562620.82656.8113.0982380.8H18-119.1/111.6119.1/111.60.04175766.05814.0150.7974111.1H18-104.0/99.0104.0/99.00.02787560.07632.0226.1953617.5H20-71.8/61.820071.8/61.81980.05002912.02952.0125.6642645.3H20-11

29、9.1/111.6119.1/111.60.03756406.76460.0167.5524567.9H20-104.0/99.0104.0/99.00.02508400.08480.0251.3284019.4H22-71.8/61.822071.8/61.81980.04553203.23247.2138.2302909.8H22-119.1/111.6119.1/111.60.03417047.37106.0184.3075024.6H22-104.0/99.0104.0/99.00.02279240.09328.0276.4614421.3H25-71.8/61.825071.8/61

30、.81980.04003640.03690.0157.0803306.6H25-119.1/111.6119.1/111.60.03008008.38075.0209.4405709.8H25-104.0/99.0104.0/99.00.020010500.010600.0314.1605024.3 注：1、表示砌缝（辐射缝）厚度，mm。取值为3.1416。 2、H16-119.1/111.6、H18-119.1/111.6、H20-119.1/111.6、H22-119.1/111.6、H25-119.1/111.6的大端尺寸119.1mm的设计 尺寸为119.125mm。上述尺寸砖号外直径

31、计算中采用设计尺寸119.125mm。 3、大小端尺寸（mm）C/D为120.4/112.9、120.4/115.4、119.1/111.6、104.0/99.0的加厚锁砖，可作为大直径楔形砖配砌等楔差双楔形砖砖环。附录A（规范性附录）窑衬配砌方案设计计算为适应回转窑用砖的国际标准和我国标准采取的等大端尺寸、等中间尺寸、不等端尺寸和等楔差尺寸双楔形砖砖环的计算，本部分采用基于回转窑用砖尺寸特征的简化计算式 (A1) (A2)式中Kx及Kd-分别为所计算双楔形砖砖环内小直径楔形砖及大直径楔形砖的数量，块；Kx'及Kd'-分别为所计算双楔形砖砖环内小直径楔形砖及大直径楔形砖的每环极

32、限砖块数，块；Dx及Dd-分别为所计算双楔形砖砖环内小直径楔形砖及大直径楔形砖的外直径，mm；D-所计算双楔形砖砖环的外直径，mm，此时DxDDd简化计算式A1和式A2可用于国际标准中等大端尺寸103mm系列砖环和等中间尺寸71.5mm系列砖环的计算，但其简易计算式太多，不规范和难以记忆。在式A1和式A2指导下，等大端尺寸100mm和等中间尺寸75mm双楔形砖环内相配砌的两种楔形砖的楔差之比设计为1/2、2/3或3/4的简单整数比，便得到楔差比相同的诸多砖环采用同一规范计算通式，见表A1和表A2。为适应大直径回转窑衬需要，但又不减小砖的楔差，本标准增设了等楔差5mm和7.5mm的加厚砖，同时作

33、为加厚锁砖。由于等楔差尺寸双楔形砖砖环内两种砖的外直径之比设计成连续整数比，这些砖环的计算式更简单规范，见表A3和A4。为用户选择合理并优选的配砌方案，在表A1A4中列出共70种窑衬双楔形砖砖环。同时，以示例1和示例2提供其设计计算及优选方法。唯有惜时才能成功，唯有努力方可成就！表A1 等大端尺寸100mm回转窑衬双楔形砖砖环配砌方案设计计算序号配砌尺寸砖号外直径D（mm）范围每环极限砖数，块每环砖量规范通式小直径楔形砖大直径楔形砖DxDdKx'Kd'小直径楔形砖量Kx，块大直径楔形砖量Kd，块总砖量Kh，块楔差比2/31H16-100/85.0H16-100/90.02176

34、.03264.067.021100.5312H18-100/85.0H18-100/90.02448.03672.075.398113.0983H20-100/85.0H20-100/90.02720.04080.083.776125.6644H22-100/85.0H22-100/90.02992.04488.092.154138.230Kx=2×0.03080(Dd-D)Kd=3×0.03080(D-Dx)5H25-100/85.0H25-100/90.03400.05100.0104.720157.080Kx=2(Dd-D)/32.4675Kd=3(D-Dx)/32.

35、4675Kh=0.03080D6H16-100/92.5H16-100/95.04352.06528.0134.042201.062或Kx=3Kx'-2×0.03080D或Kd=3×0.03080D-2Kd'7H18-100/92.5H18-100/95.04896.07344.0150.797226.1958H20-100/92.5H20-100/95.05440.08160.0167.552251.3289H22-100/92.5H22-100/95.05984.08976.0184.307276.46110H25-100/92.5H25-100/95.

36、06800.0 10200.0209.440314.160楔差比1/211H16-100/85.0H16-100/92.52176.0 4352.067.021134.04212H18-100/85.0H18-100/92.52448.0 4896.075.398150.79713H20-100/85.0H20-100/92.52720.0 5440.083.776167.55214H22-100/85.0H22-100/92.52992.0 5984.092.154184.307Kx=0.03080(Dd-D)Kd=2×0.03080(D-Dx)15H25-100/85.0H25-

37、100/92.53400.0 6800.0104.720209.440Kx=(Dd-D)/32.4675Kd=2(D-Dx)/32.4675Kh=0.03080D16H16-100/90.0H16-100/95.03264.0 6528.0100.531201.062或Kx=2Kx'-0.03080D或Kd=2×0.03080D-Kd'17H18-100/90.0H18-100/95.03672.0 7344.0113.098226.19518H20-100/90.0H20-100/95.04080.0 8160.0125.664251.32819H22-100/90

38、.0H22-100/95.04488.0 8976.0138.230276.46120H25-100/90.0H25-100/95.05100.0 10200.0157.080314.160楔差比3/421H16-100/90.0H16-100/92.53264.0 4352.0100.531134.04222H18-100/90.0H18-100/92.53672.0 4896.0113.098150.797Kx=3×0.03080(Dd-D)Kd=4×0.03080(D-Dx)23H20-100/90.0H20-100/92.54080.0 5440.0125.6641

39、67.552Kx=3(Dd-D)/32.4675Kd=4(D-Dx)/32.4675Kh=0.03080D24H22-100/90.0H22-100/92.54488.0 5984.0138.230184.307或Kx=4Kx'-3×0.03080D或Kd=4×0.03080D-Kd'25H25-100/90.0H25-100/92.55100.0 6800.0157.080209.440 注：本表计算中砌缝（辐射缝）厚度采取2mm。表A2 等中间尺寸75mm回转窑衬双楔形砖砖环配砌方案设计计算序号配砌尺寸砖号中间直径Dp（mm）范围每环极限砖数，块每环砖量

40、规范通式小直径楔形砖大直径楔形砖DpxDpdKx'Kd'小直径楔形砖量Kx，块大直径楔形砖量Kd，块总砖量Kh，块楔差比2/31H16-82.5/67.5H16-80.0/70.01642.72464.067.021100.5312H18-82.5/67.5H18-80.0/70.01848.02772.075.398113.0983H20-82.5/67.5H20-80.0/70.02053.33080.083.776125.6644H22-82.5/67.5H22-80.0/70.02258.73388.092.154138.230Kx=2×0.04080(Dpd

41、-Dp)Kd=3×0.04080(Dp-Dpx)5H25-82.5/67.5H25-80.0/70.02566.7 3850.0104.720157.080Kx=2(Dpd-Dp)/24.5098Kd=3(Dp-Dpx)/24.5098Kh=0.04080Dp6H16-78.8/71.3H16-77.5/72.53285.3 4928.0134.042201.062或Kx=3Kx'-2×0.04080Dp或Kd=3×0.04080Dp-2Kd'7H18-78.8/71.3H18-77.5/72.53696.0 5544.0150.797226.19

42、58H20-78.8/71.3H20-77.5/72.54106.7 6160.0167.552251.3289H22-78.8/71.3H22-77.5/72.54517.3 6776.0184.307276.46110H25-78.8/71.3H25-77.5/72.55133.3 7700.0209.440314.160楔差比1/211H16-82.5/67.5H16-78.8/71.31642.7 3285.3 67.021134.04212H18-82.5/67.5H18-78.8/71.31848.0 3696.0 75.398150.79713H20-82.5/67.5H20-7

43、8.8/71.32053.3 4106.7 83.776167.55214H22-82.5/67.5H22-78.8/71.32258.7 4517.3 92.154184.307Kx=0.04080(Dpd-Dp)Kd=2×0.04080(Dp-Dpx)15H25-82.5/67.5H25-78.8/71.32566.7 5133.3 104.720209.440Kx=(Dpd-Dp)/24.5098Kd=2(Dp-Dpx)/24.5098Kh=0.04080Dp16H16-80.0/70.0H16-77.5/72.52464.0 4928.0 100.531201.062或Kx=

44、2Kx'-0.04080Dp或Kd=2×0.04080Dp-Kd'17H18-80.0/70.0H18-77.5/72.52772.0 5544.0 113.098226.19518H20-80.0/70.0H20-77.5/72.53080.0 6160.0 125.664251.32819H22-80.0/70.0H22-77.5/72.53388.0 6776.0 138.230276.46120H25-80.0/70.0H25-77.5/72.53850.0 7700.0 157.080314.160楔差比3/421H16-80.0/70.0H16-78.8/

45、71.32464.03285.3100.531134.04222H18-80.0/70.0H18-78.8/71.32772.03696.0113.098150.797Kx=3×0.04080(Dpd-Dp)Kd=4×0.04080(Dp-Dpx)23H20-80.0/70.0H20-78.8/71.33080.04106.7125.664167.552Kx=3(Dpd-Dp)/24.5098Kd=4(Dp-Dpx)/24.5098Kh=0.04080Dp24H22-80.0/70.0H22-78.8/71.33388.04517.3138.230184.307或Kx=4K

46、x'-3×0.04080Dp或Kd=4×0.04080Dp-Kd'25H25-80.0/70.0H25-78.8/71.33850.05133.3157.080209.440 注：本表计算中砌缝（辐射缝）厚度采取2mm。表A3 等楔差5mm回转窑衬双楔形砖砖环配砌方案设计计算序号配砌尺寸砖号外直径D（mm）范围每环极限砖数，块每环砖量规范通式小直径楔形砖大直径楔形砖DxDdKx'=Kd'=Kh小直径楔形砖量Kx，块大直径楔形砖量Kd，块总砖量Kh，块外直径比3/41H16-77.5/72.5H16-104.0/99.05088.06784.0

47、201.0622H18-77.5/72.5H18-104.0/99.05724.07632.0226.195Kx=0.11855(Dd-D)Kd=0.11855(D-Dx)3H20-77.5/72.5H20-104.0/99.06360.08480.0251.328Kx=(Dd-D)/8.4352Kd=(D-Dx)/8.4352Kh=0.11855(Dd-Dx)4H22-77.5/72.5H22-104.0/99.06996.09328.0276.461或Kx=4Kx'-0.11855D或Kd=0.11855D-3Kd'5H25-77.5/72.5H25-104.0/99.07

48、950.010600.0314.160外直径比5/66H16-100/95.0H16-120.4/115.46528.07833.6201.0627H18-100/95.0H18-120.4/115.47344.08812.8226.195Kx=0.1540(Dd-D)Kd=0.1540(D-Dx)8H20-100/95.0H20-120.4/115.48160.09792.0251.328Kx=(Dd-D)/6.4935Kd=(D-Dx)/6.4935Kh=0.1540(Dd-Dx)9H22-100/95.0H22-120.4/115.48976.010771.2276.461或Kx=6Kx'-0.1540D或Kd=0.1540D-5Kd'10H25-100/95.0H25-120.4/115.410200.012240.0314.160 注：本表计算