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    • 1. 发明授权
    • Method for controlling a tension of a metal strip in a heat treatment
furnace
    • 控制热处理炉中金属带张力的方法
    • US5739438A
    • 1998-04-14
    • US667640
    • 1996-06-21
    • Hiroshi SawadaKohji OmoriHiroshi YoshimuraTakumi Imajuku
    • Hiroshi SawadaKohji OmoriHiroshi YoshimuraTakumi Imajuku
    • C21D11/00C21D9/56G05D15/01G01L1/26
    • G05D15/01C21D9/564
    • A method for controlling a tension of a metal strip in a heat treatment furnace, comprising (a) travelling the metal strip through a plurality of tapered rolls; (b) measuring a tension (.sigma.) working on the metal strip through at least one of the tapered rolls; (c) computing a critical tension (.sigma..sub.cr) which generates heat buckle based on a thickness of the metal strip, a width of the metal strip, an elastic modulus of the metal strip, a length of a flat roll portion and a roll taper under a hot state; and (d) controlling the tension measured by the step (b) to be over a tension (.sigma..sub.min) sufficient to prevent transverse displacement but less than the critical tension (.sigma..sub.cr) which generates heat buckle. The critical tension (.sigma..sub.cr) which generates heat buckle is calculated by the equation: .sigma..sub.cr =K.multidot.t.sup.A .multidot.(W-FL).sup.B .multidot..theta..sub.h.sup.c .multidot.E, where t is the thickness of the metal strip (mm), W is the width of the metal strip (mm), FL is the length of a flat roll portion, .theta..sub.h is the roll taper (rad) under a hot state, E is the elastic modulus of the metal strip (kgf/mm.sub.2), and K, A, B, C are constants. The tension (.sigma..sub.min) sufficient to prevent transverse displacement is obtained as a minimum value of the tension (.sigma.) satisfying the following equations: .DELTA.D
    • 一种用于控制热处理炉中的金属带的张力的方法,包括:(a)使所述金属带穿过多个锥形辊; (b)通过至少一个所述锥形辊测量在所述金属条上的张力(σ); (c)计算基于金属带的厚度,金属带的宽度,金属带的弹性模量,平坦辊部分的长度和辊锥度来产生热带扣的临界张力(σcr) 在炎热的状态下 和(d)控制由步骤(b)测量的张力超过足以防止横向位移但小于产生热扣的临界张力(σcr)的张力(σmin)。 产生热带扣的临界张力(σcr)由以下公式计算:σcr = KxtAx(W-FL)BxθhcxE,其中t是金属条的厚度(mm),W是金属的宽度 条(mm),FL是平辊部分的长度,θh是热状态下的辊锥度(rad),E是金属带的弹性模量(kgf / mm2),K,A,B ,C是常数。 获得足以防止横向位移的张力(σmin)作为满足以下等式的张力(sigma)的最小值:DELTA D <(1W))/ 2和DELTA D = g(t,W,mu,LS ,E,θh,sigma,Ra,Ra'),其中DELTA D是横向位移量,l是辊筒长度,μ是金属带和辊之间的摩擦系数,LS是线速度,σ 是金属带的张力,Ra是金属带的表面粗糙度,Ra'是辊的表面粗糙度。
    • 4. 发明授权
    • Inter-cylinder air-fuel ratio imbalance determination apparatus for internal combustion engine
    • 用于内燃机的缸内空燃比不平衡确定装置
    • US08560208B2
    • 2013-10-15
    • US13505849
    • 2009-11-05
    • Hiroshi MiyamotoYasushi IwazakiHiroshi Sawada
    • Hiroshi MiyamotoYasushi IwazakiHiroshi Sawada
    • B60T7/12
    • F02D41/0085F02D41/0065F02D41/1454Y02T10/47
    • An inter-cylinder air-fuel ratio imbalance determination apparatus (determination apparatus) according to the present invention obtains, as an “EGR supplying state imbalance determination parameter”, a value corresponding to a differential value d(abyfs)dt of a detected air-fuel ratio abyfs represented by an output value of an air-fuel ratio sensor when an EGR gas is being supplied, and obtains, as an “EGR stop state imbalance determination parameter”, a value corresponding to a differential value d(abyfs)dt when an EGR gas supply is being stopped. The determination apparatus obtains an “EGR-causing imbalance determination parameter Pegr” by subtracting the EGR stop state imbalance determination parameter Poff from the EGR supplying state imbalance determination parameter Pon, and determines that an inter-cylinder air-fuel ratio imbalance state has occurred due to the supply of the EGR gas when the parameter Pegr is larger than a threshold Pegrth.
    • 根据本发明的气缸内空燃比不平衡判定装置(判定装置),作为“EGR供给状态不平衡判定参数”,获得与检测到的空气 - 燃料比不平衡判定装置的差分值d(abyfs)dt对应的值, 在EGR气体供给时由空燃比传感器的输出值表示的燃料比abyfs,作为“EGR停止状态不平衡判定参数”,获得与差分值d(abyfs)dt对应的值 正在停止EGR气体供应。 确定装置通过从EGR供应状态不平衡确定参数Pon中减去EGR停止状态不平衡确定参数Poff而获得“EGR导致不平衡确定参数Pegr”,并且确定缸间空燃比不平衡状态已经发生 当参数Pegr大于阈值Pegrth时,供应EGR气体。
    • 8. 发明授权
    • Mechanical seal sliding member, and mechanical seal
    • 机械密封滑动件,机械密封
    • US08360436B2
    • 2013-01-29
    • US12812033
    • 2009-01-06
    • Yoshihiro TeshimaHiroshi Sawada
    • Yoshihiro TeshimaHiroshi Sawada
    • F16J15/34
    • F16J15/3424
    • The present invention provides a mechanical seal sliding member with high lubricating characteristics, in which the coefficient of friction and the temperature of sliding surfaces are lowered and stabilized without excessive leakage. In the mechanical seal sliding member of the present invention, on the sliding surface 2, a plurality of grating sections 5 are formed separately in each of which a plurality of linear shape ridge portions parallel to each other are formed in a predetermined region with a predetermined pitch. The linear shape ridge portions of the plurality of grating sections are formed as inclined at a predetermined angle to a sliding direction of the sliding surfaces 2. Such periodic structure can improve the lubricating characteristics for lubrication. By irradiating a linearly polarized femtosecond laser with irradiating energy adjacent to a process threshold level to a material surface, a fine periodic structure with a cycle interval comparable with a laser wavelength and with a ridge depth half or less than the laser wavelength can be formed by a self-structuring manner.
    • 本发明提供一种具有高润滑特性的机械密封滑动构件,其中摩擦系数和滑动面的温度降低并稳定而没有过多的泄漏。 在本发明的机械密封滑动部件中,在滑动面2上分别形成多个光栅部5,每个光栅部5分别形成有规定区域的多个直线状的脊状部, 沥青。 多个格栅部的直线形状的脊部形成为与滑动面2的滑动方向成预定角度倾斜。这种周期性结构可以提高润滑的润滑特性。 通过用材料表面照射具有与过程阈值水平相邻的能量的线性偏振飞秒激光,可以通过与激光波长相当的周期间隔和具有与激光波长一半或更小的脊深度的精细周期性结构来形成微小的周期性结构, 一种自我组织的方式。