公开(公告)号：US06737019B2

公开(公告)日：2004-05-18

申请号：US10142091

申请日：2002-05-09

申请人： Tatsuo Fukuzumi ,  Motoki Watanabe ,  Tsuneo Yoshimura

发明人： Tatsuo Fukuzumi ,  Motoki Watanabe ,  Tsuneo Yoshimura

IPC分类号： C22C3860

CPC分类号： C22C38/04 ,  C22C38/002 ,  C22C38/12 ,  C22C38/60

摘要： A high-sulfur free-cutting steel which has a chemical composition containing, in mass %, 0.03 to 0.20% C, 0.35% or less Si (including 0%), 0.30 to 2.00% Mn, 0.01 to 0.15% P, 0.35 to 0.65% S 0.0100 to 0.0250% O, 0.020% or less N, 0.005% or less Al (including 0%), 0.02 to 0.20% Nb, and further containing 0.05 to 0.50% V or 0.02 to 0.20% Ti, or both, with the remainder consisting of Fe and unavoidable impurities, wherein sulfide type inclusions, as the principal nonmetallic inclusions contained in the steel, have a mean size of 50 &mgr;m2 or less and are present at the rate of 500 to 1000 inclusions per mm2 in the cross section of the steel. The sulfur-containing free-cutting steel has a good machinability comparable or superior to that of free-cutting steels containing heavy metals which have a deleterious effect on the environment, without requiring the addition of such undesirable heavy metals.

摘要翻译： 一种高硫自由切削钢，其具有以质量％计含有0.03〜0.20％C，0.35％以下的Si（含0％），0.30〜2.00％Mn，0.01〜0.15％P，0.35〜 0.65％S 0.0100〜0.0250％O，0.020％以下N，0.005％以下Al（含0％），0.02〜0.20％Nb，进一步含有0.05〜0.50％V或0.02〜0.20％Ti， 剩余部分由Fe和不可避免的杂质构成，其中作为钢中所含的主要非金属夹杂物的硫化物型夹杂物的平​​均粒径为50μm2以下，以每毫米500〜1000个夹杂物的速度存在 <2>在钢的横截面。 含硫自由切削钢具有与含有对环境有害影响的重金属的自由切削钢相当或优于不需要加入这种不需要的重金属的机械加工性能。

公开(公告)号：US07014812B2

公开(公告)日：2006-03-21

申请号：US10280346

申请日：2002-10-25

申请人： Tatsuo Fukuzumi ,  Motoki Watanabe ,  Tsuneo Yoshimura ,  Katsuyuki Uchibori

发明人： Tatsuo Fukuzumi ,  Motoki Watanabe ,  Tsuneo Yoshimura ,  Katsuyuki Uchibori

IPC分类号： C22C38/60

CPC分类号： C22C38/60 ,  C22C38/002 ,  C22C38/04 ,  C22C38/12

摘要： A sulfur-containing free-cutting steel for machine structural use, containing, in weight percent, 0.10 to 0.55% of C, 0.05 to 1.00% of Si, 0.30 to 2.50% of Mn, not more than 0.15% of P, 0.050 to 0.350% of S, more than 0.010% but not more than 0.020% of Al, 0.015 to 0.200% of Nb, 0.0015 to 0.0150% of O, and not more than 0.02% of N, and further containing, in weight percent, at least one selected from the group consisting of 0.03 to 0.50% of V, 0.02 to 0.20% of Ti and 0.01 to 0.20% of Zr, wherein the ratio S/O of the S content to the O content is 15 to 120, and at least one selected from the group consisting of an oxide, a carbide, a nitride and a carbonitride of Nb(see FIG. 1) acts as nuclei for precipitation of MnS type inclusions. A sulfur-containing free-cutting steel for machine structural use is obtained by adjusting the chemical composition of steel and provides a sulfur free-cutting steel that does not contain lead but has a machinability and mechanical properties on a par with conventional lead-containing free-cutting steel.

摘要翻译： 一种用于机械结构用的含硫自由切削钢，其重量百分比含有C：0.10〜0.55％，Si：0.05〜1.00％，Mn：0.30〜2.50％，P：0.15％以下，0.050〜 S的0.350％，Al的0.010％以上且0.020％以下，Nb：0.015〜0.200％，O：0.0015〜0.0150％，N：0.02以下，进一步含有 至少一种选自V，0.03〜0.50％，0.02〜0.20％Ti和0.01〜0.20％Zr，其中S含量与O含量之比S / O为15〜120， 选自Nb（参见图1）的氧化物，碳化物，氮化物和碳氮化物的至少一种作为析出MnS型夹杂物的核。 通过调整钢的化学成分得到一种用于机械结构用途的含硫自由切削钢，并提供一种不含铅的硫自由切削钢，但具有与常规含铅自由基相同的机械加工性和机械性能 切钢。

公开(公告)号：US4682914A

公开(公告)日：1987-07-28

申请号：US811998

申请日：1985-12-23

申请人： Isamu Aihara ,  Tsuneo Yoshimura

发明人： Isamu Aihara ,  Tsuneo Yoshimura

IPC分类号： E02D17/08

CPC分类号： E02D17/083

摘要： A hydraulic trench support includes a piston and cylinder head supported within a cylinder such that the cylinder head is fixed at one end of the cylinder and the piston is moveable within the cylinder. A piston rod is coupled to the hydraulic piston at one end and extends outside the cylinder and beyond at the other end. A pair of load bearing bases having generally planar construction are attached to the piston rod portion extending beyond the cylinder and to the cylinder head. Means are provided for introducing a fluid under pressure into the cylinder between the inwardly facing surfaces of the cylinder head and piston to provide an outwardly expanding force there between which is coupled to the base members to provide a sidewall retaining force. In one embodiment, spring means are provided which bias the hydraulic trench support toward a contracted position in the absence of fluid pressure.

摘要翻译： 液压沟槽支撑件包括支撑在气缸内的活塞和气缸盖，使得气缸盖固定在气缸的一端并且活塞可在气缸内移动。 活塞杆在一端连接到液压活塞，并延伸到气缸外部并在另一端延伸。 具有大致平面结构的一对承载底座附接到延伸超过气缸和气缸盖的活塞杆部分。 提供了用于将压力下的流体引入气缸中的气缸盖和活塞的向内的表面之间以提供向外扩张的力的装置，在其之间联接到基部构件以提供侧壁保持力。 在一个实施例中，提供弹簧装置，其在没有流体压力的情况下将液压沟槽支撑件朝向收缩位置偏置。

公开(公告)号：US4784922A

公开(公告)日：1988-11-15

申请号：US914915

申请日：1986-10-03

申请人： Tsuneo Yoshimura

发明人： Tsuneo Yoshimura

IPC分类号： B23K20/04 ,  B32B15/01 ,  B32B15/18

CPC分类号： B23K20/04 ,  B32B15/011 ,  Y10T428/12951 ,  Y10T428/12979

摘要： The present invention provides corrosion resistance clad steels comprising a steel core and a cladding of a corrosion resistance metallic material tightly covering the circumference of the core, the interface between the core and cladding being metallurgically bonded. As the core materials, steel bars for concrete reinforcement including PC steel bars; or materials for sections (e.g., angles or channels) may be appropriately selected depending on the intended use. The foregoing steel materials is produced by a method comprising the steps of arranging the corrosion resistance metallic cladding member over the entire surface of the circumference of the steel core member and hot rolling to form an intimate metallurgical bonding at the interface between both members, thereby forming the foregoing clad steel material. The material may be formed into deformed steel bars. The clad steel thus obtained have an advantageous combination of properties, particularly with respect to corrosion and heat resistance, strength, bendability and are free of separation of the core and cladding.

摘要翻译： 本发明提供了耐腐蚀覆钢包含钢芯和紧密地覆盖芯的圆周上的耐腐蚀性金属材料的包层，芯和包层之间的界面处冶金结合。 作为核心材料，混凝土钢筋钢筋包括PC钢筋; 或用于部分（例如，角度或通道）的材料可以根据预期用途适当地选择。 上述钢铁材料通过包括布置在所述钢芯构件和热轧的圆周的整个表面上的耐蚀性金属包覆构件的步骤的方法生产，以形成在两个构件之间的界面的紧密冶金结合，由此形成 上述复合钢材料。 该材料可以形成为变形的钢筋。 由此获得的复合钢具有性质的有利组合，特别是对于耐腐蚀性和耐热性，强度，弯曲加工性及可自由芯和包层的分离。

公开(公告)号：US4614632A

公开(公告)日：1986-09-30

申请号：US687582

申请日：1984-12-28

申请人： Seiju Kezuka ,  Tsuneo Yoshimura ,  Tadayoshi Kato ,  Moriya Iida

发明人： Seiju Kezuka ,  Tsuneo Yoshimura ,  Tadayoshi Kato ,  Moriya Iida

IPC分类号： B29C51/08 ,  B29C51/22 ,  B29L31/60 ,  B29C53/24

CPC分类号： B29C51/08 ,  B29C51/22 ,  B29L2031/712

摘要： A method and an apparatus for continuously forming embossed sheets having good mechanical properties but no directional property. The apparatus has a pair of temperature-adjustable forming rolls, axial distance regulating devices to control the distance between the axes of the pair of forming rolls and a driving means for rotating the pair of forming rolls, each of the pair of forming rolls being provided with a plurality of ring-shaped blocks having a large number of projections on their circumferential surfaces; and the method comprises the steps of: introducing a sheet into a space between the pair of forming rolls, bringing the sheet into contact with the projections of the forming rolls, where the projections of the pair of forming rolls engage with one another without pressed contact, thereby making the sheet undergo plastic deformation and forming a large number of projections on both sides of the sheet.

摘要翻译： 一种用于连续地形成具有良好机械性能但没有方向性的压花片的方法和装置。 该装置具有一对温度可调的成形辊，用于控制一对成型辊的轴线之间的距离的轴向距离调节装置和用于使一对成形辊旋转的驱动装置，所述一对成形辊中的每一个设置 具有多个在其圆周表面上具有大量突起的环形块; 该方法包括以下步骤：将片材引入到一对成形辊之间的空间中，使片材与成形辊的突起接触，其中一对成形辊的突起彼此接合而没有压接 从而使片材发生塑性变形，并在片材的两侧形成大量的突起。

公开(公告)号：US4524819A

公开(公告)日：1985-06-25

申请号：US561134

申请日：1983-12-13

申请人： Tsuneo Yoshimura

发明人： Tsuneo Yoshimura

IPC分类号： B22D11/108 ,  B22D11/11 ,  B22D11/10 ,  B22D27/02

CPC分类号： B22D11/11 ,  B22D11/108

摘要： A leaded, free-cutting steel is manufactured by a continuous casting process without causing any pollution of the environment or manufacturing apparatus by toxic gases or fumes and in a high yield of lead addition with a high quality, wherein lead, lead alloy, or a composite lead feed material comprising lead or lead alloy covered with a metallic material harmless for the steel such as, for example, aluminum or iron, is directly added to molten steel which is being electromagnetically stirred in the horizontal direction in a mold.

摘要翻译： 含铅的易切削钢通过连续铸造方法制造，而不会由于有毒气体或烟雾而导致环境或制造装置的任何污染，并且以高质量的铅添加量高，其中铅，铅合金或 包含铅或铅合金的复合引线材料，被包覆有金属材料，例如铝或铁无害化，直接添加到在模具中沿水平方向电磁搅拌的钢水中。