Rockbolt of high strength steel pipe and method of manufacturing the same
    4.
    发明授权
    Rockbolt of high strength steel pipe and method of manufacturing the same 有权
    高强度钢管的Rockbolt及其制造方法

    公开(公告)号:US07794179B2

    公开(公告)日:2010-09-14

    申请号:US10586088

    申请日:2004-07-29

    IPC分类号: E21D21/00

    摘要: A high-strength steel pipe rockbolt has an expansive rockbolt main body prepared by processing a high-strength steel sheet of 1.8-2.3 mm in thickness with a tensile strength of 490-640 N/mm2 and an elongation of 20% or more into a welded pipe and roll-forming the welded pipe into a shaped pipe having one or more concavities extending along an axial direction. Use of the high-strength steel sheet ensures sufficient strength of the shaped pipe regardless of a decrease in thickness. The thin welded pipe is also advantageous in resistance to cracking caused by accumulation of strains introduced during roll-forming, swaging both ends of the welded pipe and hydraulic expansion. Moreover, expansive deformation of the shaped pipe is initiated by injection of a pressurized fluid at a low pressure, so that the expansive deformation is completed in a short time period with an improved working efficiency.

    摘要翻译: 高强度钢管摇杆具有膨胀式摇杆主体,通过将拉伸强度为490〜640N / mm 2,伸长率为20%以上的高强度钢板加工成1.8-2.3mm的厚度, 焊接管和辊轧成形为具有沿着轴向延伸的一个或多个凹部的成形管。 使用高强度钢板确保成形管的强度足够,而与厚度的减小无关。 薄的焊接管也有利于在轧制成形期间引入的应变累积,使焊接管的两端和液压膨胀成型。 此外,通过在低压下注入加压流体来开始成形管的膨胀变形,使得膨胀变形在短时间内完成,并且提高了工作效率。

    Method and apparatus for vacuum deposition plating
    5.
    发明授权
    Method and apparatus for vacuum deposition plating 失效
    真空沉积电镀方法和装置

    公开(公告)号:US4674443A

    公开(公告)日:1987-06-23

    申请号:US855793

    申请日:1986-04-24

    IPC分类号: C21D9/56 C23C14/56 C23C13/08

    摘要: A vacuum deposition plating apparatus having an inlet-side vacuum sealing device provided in front of a vacuum deposition plating chamber, an inlet-side inactive gas replacement chamber provided between the inlet-side vacuum sealing device and an annealing furnace, an outlet-side vacuum sealing device provided in the rear of the vacuum deposition plating chamber, an outlet-side inactive gas replacement chamber provided between the outlet-side vacuum sealing device and the atmosphere, and an inactive gas circulating/purifying device for circulating an inactive gas from vacuum chambers of both the vacuum sealing devices to atmospheric pressure chambers of both the vacuum sealing devices and for removing water, oil and oxygen from the inactive gas; a pressure gauge provided on the annealing furnace; a pressure gauge, a control valve, an automatic valve, a hydrogen concentration detector and a discharge valve provided on the inlet-side inactive gas replacement chamber; a pressure gauge and an automatic valve provided on the outlet-side inactive gas replacement chamber; and an automatic valve connecting to an inactive gas tank for emergency provided on the atmospheric pressure chambers of both the vacuum sealing devices.

    摘要翻译: 一种真空沉积电镀装置,其具有设置在真空沉积电镀室前面的入口侧真空密封装置,设置在入口侧真空密封装置和退火炉之间的入口侧非活性气体置换室,出口侧真空 密封装置,设置在真空沉积电镀室的后部,设置在出口侧真空密封装置和大气之间的出口侧非活性气体置换室,以及用于使来自真空室的惰性气体循环的惰性气体循环/净化装置 两个真空密封装置与两个真空密封装置的大气压室和从惰性气体中除去水,油和氧的两个; 设置在退火炉上的压力计; 压力计,控制阀,自动阀,氢浓度检测器和设置在入口侧非活性气体置换室上的排出阀; 设置在出口侧非活性气体置换室上的压力计和自动阀; 以及连接到两个真空密封装置的大气压室上的用于紧急的惰性气体罐的自动阀。

    Lock Bolt of High Strength Steel Pipe and Method of Manufacturing the Same
    6.
    发明申请
    Lock Bolt of High Strength Steel Pipe and Method of Manufacturing the Same 有权
    高强度钢管锁紧螺栓及其制造方法

    公开(公告)号:US20080107488A1

    公开(公告)日:2008-05-08

    申请号:US10586088

    申请日:2004-07-29

    IPC分类号: E21D20/00

    摘要: A lock bolt of a high strength steel pipe, wherein an expansion type lock bolt body is formed of a deformed pipe manufactured by using, as a raw material, a high tension steel plate having a tensile strength of 490 to 640 N/mm2, an elongation of 20% or more, and a plate thickness of 1.8 to 2.3 mm and having a single or a plurality of recessed parts extending in the axial direction of the deformed pipe. Since the high tension steel plate is used in the lock bolt, sufficient strength can be secured for the lock bolt though the steel plate is thin, and cracking due to stains introduced in a molding process, a both end shrinkage process, and a pressurizing/expanding process can be suppressed. Since an expansion start pressure when a pressurized fluid is press-fitted and inflated is also low, a time in which the expansion/deformation is completed can be shortened and workability can also be improved.

    摘要翻译: 一种高强度钢管的锁定螺栓,其特征在于,膨胀型锁定螺栓本体由以抗拉强度为490〜640N / mm 2%,伸长率为20%以上,板厚为1.8〜2.3mm,并且具有沿变形管的轴向延伸的单个或多个凹部。 由于高压钢板用于锁定螺栓,因此通过钢板薄而可以确保锁紧螺栓的足够的强度,并且由于在模制过程中引入的污渍,两端收缩过程和加压/ 膨胀过程可以抑制。 由于当加压流体被压配和充气时的膨胀开始压力也低,所以可以缩短膨胀/变形完成的时间,并且也可以提高加工性。

    Hot-dip Zn-A1-Mg plated steel sheet good in corrosion resistance and surface appearance and method of producing the same
    7.
    发明授权
    Hot-dip Zn-A1-Mg plated steel sheet good in corrosion resistance and surface appearance and method of producing the same 有权
    热浸Zn-A1-Mg镀钢板,耐腐蚀性和表面外观好,其制造方法

    公开(公告)号:US06379820B1

    公开(公告)日:2002-04-30

    申请号:US09671779

    申请日:2000-09-27

    IPC分类号: B32B1501

    摘要: A hot-dip Zn—Al—Mg plated steel sheet good in corrosion resistance and surface appearance that is a hot-dip Zn-base plated steel sheet obtained by forming on a surface of a steel sheet a hot-dip Zn—Al—Mg plating layer composed of Al: 4.0-10 wt. %, Mg: 1.0-4.0 wt. % and the balance of Zn and unavoidable impurities, the plating layer having a metallic structure including a primary crystal Al phase or a primary crystal Al phase and a Zn single phase in a matrix of Al/Zn/Zn2Mg ternary eutectic structure. To obtain a plating layer possessing this metallic structure, the cooling rate of the plating layer adhering to a steel strip extracted from a plating bath and the plating bath temperature are appropriately controlled in a continuous hot-dip plating machine and/or appropriate amounts of Ti and B are added to the bath. Occurrence of a stripe pattern peculiar to this plated steel sheet is controlled by morphology control of a Mg-containing oxide film up to solidification of the plating layer or by adding an appropriate amount of Be to the plating bath.

    摘要翻译: 通过在钢板的表面上形成热浸镀Zn-Al-Mg而得到的热浸镀Zn钢板的耐腐蚀性和表面外观的热浸镀锌-Al-Mg镀钢板 由Al组成的镀层:4.0-10wt。 %,Mg:1.0-4.0wt。 %和余量的Zn和不可避免的杂质,镀层在Al / Zn / Zn2Mg三元共晶组织的基体中具有包括一次晶相Al相或一次晶相Al相和Zn单相的金属结构。 为了获得具有这种金属结构的镀层,将附着在从镀浴提取的钢带上的镀层的冷却速度和电镀浴温度适当地控制在连续热镀电镀机中和/或适当量的Ti 和B加入浴中。 该电镀钢板特有的条纹图案的发生通过含Mg氧化膜的形貌控制直到镀层凝固或通过向镀浴中添加适量的Be来控制。

    Rockbolts made of steel pipes
    9.
    发明授权
    Rockbolts made of steel pipes 有权
    摇杆由钢管制成

    公开(公告)号:US07927043B2

    公开(公告)日:2011-04-19

    申请号:US10579318

    申请日:2004-07-29

    IPC分类号: E21D21/00 E21D20/00

    摘要: A sleeve 10 for introduction of a pressurized fluid, which is attached to a rockbolt main body 1, comprises a cylindrical projecting part 11 of a large diameter and a bearing-plate-holding part 12 of a diameter smaller than an aperture of a bearing plate 6. The projecting part 11 and the bearing-plate-holding part 12 preferably has the same inner diameter. When the rockbolt main body 1 is embedded in a bedrock or ground, the bearing plate 6 locates on an edge of a rockbolt-setting hole of the bedrock or ground, and the bearing-plate-holding part 12 extends through the bearing plate 6 into the rockbolt-setting hole. Since the projecting part 11 and the bearing plate 6 are disposed on a sprayed concrete layer, a projection height of the rockbolt is remarkably decreased. Consequently, lining concrete 8 is applied onto the sprayed concrete layer with ease, and the bedrock or ground is reinforced with high reliability.

    摘要翻译: 用于引入附接到摇杆本体1的加压流体的套筒10包括大直径的圆柱形突出部11和直径小于支承板的孔的支承板保持部12 突出部11和支承板保持部12优选具有相同的内径。 当摇杆本体1嵌入基岩或地面时,支承板6位于基岩或地面的摇杆安装孔的边缘,承载板保持部12穿过支承板6延伸穿过轴承板6 摇杆安装孔。 由于突出部11和支承板6配置在喷射混凝土层上,所以摇杆的突出高度显着降低。 因此,衬里混凝土8易于施加到喷涂的混凝土层上,基岩或地面以高可靠性加固。

    Rockbolts made of steel pipes
    10.
    发明申请
    Rockbolts made of steel pipes 有权
    摇杆由钢管制成

    公开(公告)号:US20070081864A1

    公开(公告)日:2007-04-12

    申请号:US10579318

    申请日:2004-07-29

    IPC分类号: E21D21/00

    摘要: A sleeve 10 for introduction of a pressurized fluid, which is attached to a rockbolt main body 1, comprises a cylindrical projecting part 11 of a large diameter and a bearing-plate-holding part 12 of a diameter smaller than an aperture of a bearing plate 6. The projecting part 11 and the bearing-plate-holding part 12 preferably has the same inner diameter. When the rockbolt main body 1 is embedded in a bedrock or ground, the bearing plate 6 locates on an edge of a rockbolt-setting hole of the bedrock or ground, and the bearing-plate-holding part 12 extends through the bearing plate 6 into the rockbolt-setting hole. Since the projecting part 11 and the bearing plate 6 are disposed on a sprayed concrete layer, a projection height of the rockbolt is remarkably decreased. Consequently, lining concrete 8 is applied onto the sprayed concrete layer with ease, and the bedrock or ground is reinforced with high reliability.

    摘要翻译: 用于引入附接到摇杆本体1的加压流体的套筒10包括大直径的圆柱形突出部11和直径小于支承板的孔的支承板保持部12 6。 突出部11和支承板保持部12优选具有相同的内径。 当摇杆本体1嵌入基岩或地面时,支承板6位于基岩或地面的摇杆安装孔的边缘,承载板保持部12穿过支承板6延伸穿过轴承板6 摇杆安装孔。 由于突出部11和支承板6配置在喷射混凝土层上,所以摇杆的突出高度显着降低。 因此,衬里混凝土8易于施加到喷涂的混凝土层上,并且基岩或地面以高可靠性被加强。