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    • 7. 发明专利
    • Manufacture of steel bar
    • 钢筋制造
    • JPS6167501A
    • 1986-04-07
    • JP18884584
    • 1984-09-11
    • Mitsubishi Steel Mfg Co Ltd
    • YOSHIMURA TSUNEOCHIKUHIJI TOKIOYAMAMOTO SATORU
    • B21B1/16B21B1/02B21B1/18
    • B21B1/02
    • PURPOSE:To obtain a steel bar perfectly free from internal defects without enlarging the scale of rolling-mill equipment, by adding a forging stage, in manufacturing a steel bar by hot rolling after heating an ingot or a continuously cast bloom, and blooming the heated one. CONSTITUTION:After heating an ingot or a continuously cast bloom 1 in a heating furnace 2 and blooming the heated one; a steel bar is manufactured by performing a hot rolling containing an intermediate rolling and a finish one. Here, for instance, a rolling stage is interposed between the heating and blooming stages, to forge the heated bloom 1, etc. throughout its whole length by a forging machine 4. Or the forging can be performed after the blooming or by an optional roll stand during hot rolling. By this process, the weakness of internal-quality improving action by roll-rolling is reinforced by the forging, and a steel bar of good quality free from internal defects is obtained by a roll rolling of small reduction ratio.
    • 目的:为了获得完全没有内部缺陷的钢筋,而不扩大轧制设备的规模,通过添加锻造阶段,在加热锭或连续铸造的坯料之后通过热轧制造钢筋,并且加热 一。 构成:在加热炉2中加热铸锭或连续铸造的坯料1,并加热加热炉; 通过进行包含中间轧制和精加工的热轧来制造钢棒。 这里,例如,在加热阶段和开花阶段之间插入滚动台,通过锻造机4在整个长度上锻造加热的花坯1等。或者锻造可以在开花后或通过任选的辊 在热轧期间站立。 通过该处理,通过锻造加强了通过辊轧的内部质量改善作用的弱点,并且通过小减速比的辊轧获得了没有内部缺陷的良好质量的钢棒。
    • 8. 发明专利
    • Method for rolling high melting-point metallic sintered body
    • 用于轧制高熔点金属烧结体的方法
    • JPS6160201A
    • 1986-03-27
    • JP17943884
    • 1984-08-30
    • Toshiba Corp
    • ITO MASAMISHIGA NAOJIHAYASHI KEISUKE
    • B22F3/24B21B1/00B21B1/02B21B3/00C22F1/00C22F1/18
    • B21B3/00B21B1/02
    • PURPOSE:To improve rolling workability and to improve product yield and productivity by forging at least a part of the surface of a sintered body of tungsten, molybdenum, or each alloy into a workable structure before rolling the sintered body. CONSTITUTION:The density and tensile strength of a sintered body are improved by forging the whole surface of the sintered body, consisting of high melting- point tungsten, molybdenum or each alloy, or the edge part liable to produce a structural defect, into a workable structure whose granular crystals are extended into fibrous forms. After that, the sintered body is introduced to three- sides rolls to be rolled. Thus, the rolling time is reduced by improving the ductility of the surface part and preventing the generation of cracks, to improve the productivity and yield of a product.
    • 目的:通过在轧制烧结体之前将钨,钼或各种合金的烧结体的至少一部分表面锻造成可加工的结构,提高轧制加工性,提高产品的产率和生产率。 构成:通过将由高熔点钨,钼或每种合金或易于产生结构缺陷的边缘部分组成的烧结体的整个表面锻造成可加工的,烧结体的密度和拉伸强度得到改善 颗粒状晶体延伸成纤维形式的结构。 之后,将烧结体引入三辊轧制辊。 因此,通过改善表面部分的延展性并防止产生裂纹来降低轧制时间,从而提高产品的生产率和产率。
    • 9. 发明专利
    • Method and installation for manufacturing metallic intermediate or final product
    • 制造金属中间体或最终产品的方法和安装
    • JPS6138701A
    • 1986-02-24
    • JP15754285
    • 1985-07-16
    • Nichidoku Jukogyo Kk
    • AHIMU DEEYAFUORUKAA HOOMEIYAAKAARU HAINTSU RIIGUMANRORUFU KARUPABERUNTO RAINERU KOTSUTSUAN
    • B21B1/08B21B1/02
    • B21B1/02
    • PURPOSE: To obtain many applied dimensions from a few kinds of the materials of an initial working stage and to secure easily said materials to be stocked, by rough rolling the material under its residual heat when it is provided with a final deformation work by heating the short cut material having a unified cross section.
      CONSTITUTION: The titled manufacturing installation is formed by a heating furnace 1 used for heating the material of an initial working stage, a main deformation working device 9 and rolling stages 6, 7 installed between the furnace 1 and the device 9. The material 4 cut short and made to have a unified cross section, round or polygonal, is heated to a rolling temperature in the furnace 1. Next, the material 4 is rolled into the smaller dimensions than the initial cross section at the rolling stages 6, 7 before being cooled. Successively, it is rolled into the prescribed dimensions by the device 9.
      COPYRIGHT: (C)1986,JPO&Japio
    • 目的:为了从原始工作阶段的几种材料获得许多应用尺寸,并且通过在通过加热所述材料的最终变形工作提供最终变形工作时,通过在剩余热量下粗加工材料来容易地确保待储存的材料 具有统一横截面的短切材料。 规定:标准制造装置由用于加热初始工作台的材料的加热炉1,安装在炉1和装置9之间的主变形加工装置9和轧制工段6,7形成。材料4切割 将其制成具有统一的横截面,圆形或多边形,在炉1中被加热到轧制温度。接下来,在轧制阶段6,7之前将材料4轧制成比初始横截面更小的尺寸,之后为 冷却。 接下来,它被装置9滚动到规定的尺寸。
    • 10. 发明专利
    • Rolling method for giving high rolling reduction to material to be rolled
    • 轧制材料轧制高轧辊的轧制方法
    • JPS5772701A
    • 1982-05-07
    • JP14861980
    • 1980-10-22
    • Hitachi Ltd
    • SHIMIZU MAKOTO
    • B21B1/02B21B1/22
    • B21B1/02
    • PURPOSE:To improve the feedability of a blank material to be fed to a rolling roll, and to make the rolling process possible to be performed with a reduced number of rolling passes, by previously forming the longitudinal end of the blank material into a truncated pyramid shape, and then, by starting a rolling process for giving a high rolling reduction to the blank material. CONSTITUTION:The longitudinal end of a blank material 1 such as a billet, a bar or a rod, is formed into a truncated pyramid shape, in order to reduce the angle of bite of a rolling roll 2 at the bite-starting point; then, a roughing mill is started to perform a rolling process for giving a high rolling reduction to the blank material 1. Hereby, the angle of bite for the tip of the blank material 1 is reduced from theta to theta' so that the feedability of the blank material 1 is improved, and the length of the rolling process is shortened. Besides, the amount of defective part due to the front cracking in the rolled material is reduced so that the yield is improved.
    • 目的:为了提高进给轧辊的坯料的供给能力,通过预先将坯料的纵向端部预先形成为截头棱锥体,能够以减少的轧制次数进行轧制加工 然后,通过开始对坯料进行高轧制压下的轧制工序。 构成:为了减小轧制辊2在咬起点的咬合角度,坯料1,棒材或棒材等的纵向端部形成为截头棱锥形状。 然后,开始粗轧机对坯料1进行高轧制压缩的轧制工艺。因此,坯料1的尖端的咬合角度从θ减小到θ',使得 坯料1得到改善,并且轧制过程的长度缩短。 此外,由于轧制材料中的前部开裂引起的缺陷部分的量减少,从而提高了收率。