摘要:
A slag disposal method for disposing of slags produced in furnaces during iron or steel making processes comprises employing the steps of magnetic sorting of masses of crude slags of a size greater than a value ranging between 300 to 500 mm obtained from the furnaces into slags rich in iron (above about 50 to 60 percent) and slags not rich in iron (below about 50 to 60 percent) and then applying a compressive force to the slags rich in iron to cause a coarse crushing and/or deformation to reduce the size and at the same time increase the iron content due to the breaking and separation of the slags from the metal. Further magnetic sorting and sieving after griding are provided to obtain concentrates having high iron content and to improve recovery efficiency.
摘要:
A liner for the outlet port of a rod mill including a cylindrical body provided on the peripheral edge of an opening of the liner and projecting outwardly through the outlet port to prevent a rod from exiting the liner. The projecting length of the cylindrical body on the side close to the end portion of the barrel of the rod mill is preferably longer than that on the opposite side.
摘要:
A shell structure of a heavy-load type rod mill including a barrel having an outlet port and with a plate thickness of t.sub.1, and a pair of trunnions having journals integrally formed thereon and with a plate thickness of t.sub.2, which trunnions are welded to the barrel. At the weld joining the barrel and the trunnion, the relationship between the plate thickness t.sub.1 of the barrel and the plate thickness t.sub.2 of the trunnion is t.sub.1 .ltoreq.t.sub.2 .ltoreq.2t.sub.1.
摘要:
A control method for crushing massive furnace slag using a swingable type crushing apparatus in which a crushing clearance is increased or decreased in a stepwise manner by a hydraulic mechanism depending on crushing conditions of the massive furnace slag, which may be blast furnace slag, convertor slag, and electric furnace slag. A hydraulic pressure of a hydraulic mechanism is detected as a variable of the crushing conditions and is compared with a set value so as to adjust the crushing clearance.
摘要:
An optical disk is provided which comprises two sheets of substrates; or two sheets of substrate and a reinforcing plate or a reinforcing rim; or one sheet of substrate and a reinforcing plate; which are bonded to form an integrated body having a spacer interposed therebetween, said spacer being made of elastomeric foam having a specific gravity of not more than 1.5 and an expansion ratio of not less than 1.5 as the material of the said spacer. This optical disk has a high adaptability of the drive and exhibits a high reliability, i.e. excellent vibration restricting performance, thereby being possible to provide a stable and highly accurate information processing.
摘要:
A vibration-damping material with excellent workability consisting of two metal plates and a vibration-damping layer of a thermoplastic resin interposed between the two metal plates, in which the vibration-damping layer of a thermoplastic resin consists of a film as a middle layer and a polyolefin type resin (B) provided on both sides of the film as an upper and lower layer, the film as the middle layer being composed of (1) at least one resin (A) selected from the group consisting of polyolefin type resins and ionomer resins each having a modulus of elasticity in shear at 20.degree. C. of 3.times.10.sup.9 to 1.times.10.sup.7 dyne/cm.sup.2, a percentage of elongation at 20.degree. C. of 50% or above and a peak temperature of dissipation factor (tan .delta.) of -120.degree. C. to 80.degree. C. or (2) a resin mixture of the resin (A) and a synthetic rubber having a percentage of elongation at 20.degree. C. of 100% or above and a peak temperature of dissipation factor (tan .delta.) of -120.degree. to 50.degree. C., and the polyolefin type resin (B) having a modulus of elasticity in shear at 20.degree. C. larger than that of the resin (A), a percentage of elongation at 20.degree. C. of 10% or above, a peak temperature of dissipation factor (tan .delta.) of -40.degree. to 180.degree. C. and a bonding strength toward the metal plates at 20.degree. C. and 180.degree. -peeling of 3 kg/cm or above.
摘要翻译:一种具有优异的可加工性的减振材料,由两块金属板和一块热塑性树脂构成的隔热层之间夹在两块金属板之间的隔热层组成,其中热塑性树脂的减震层由一层作为中间层的薄膜和 设置在作为上下层的膜的两面上的聚烯烃类树脂(B),作为中间层的膜由(1)至少一种选自聚烯烃类树脂和 各自具有在20℃剪切下的弹性模量为3×10 9至1×10 7达因/ cm 2的离聚物树脂,20℃下的伸长百分比为50%或更高,并且散热因子(tanδ)的峰值温度为 120℃〜80℃或(2)树脂(A)和20℃下的伸长率为100%以上的合成橡胶的树脂混合物和峰值温度(tanδ delta)为-120〜50℃,聚烯烃类树脂 (B)在20℃下的剪切弹性模量大于树脂(A)的弹性模量,20℃下的伸长率为10%以上,耗散因子峰值温度(tanδ) -40℃至180℃,并且在20℃下对金属板的粘结强度和3kg / cm 3以上的180°剥离。
摘要:
A vibration-damping material consisting of two metal plates and a vibration-damping layer of thermoplastic resin interposed between the two metal plates, in which said thermoplastic resin has a percentage of wlongation at 20.degree. C. of 30% or more, preferably 50% or more, a peak temperature of dissipation factor (tan .delta.) in the range of -50.degree. C. to 130.degree. C., and a bonding strength toward the metal plates of 3 kg/cm or more as determined by 180.degree.-peeling test at 20.degree. C.
摘要:
A plastic pallet comprises a pair of deck boards opposed to each other in parallel with each other, a pair of outer girder portions respectively disposed at a pair of opposite side portions of the deck boards, an inner girder portion placed midway between the outer girder portions, and a plurality of reinforcement ribs disposed on respective inner surfaces of said deck boards. Each of the outer girder portions includes a side wall and a first partition wall disposed between the deck boards. The inner girder portion includes a pair of second partition walls which are disposed in parallel with each other with a predetermined distance. The reinforcement ribs existing within a range of a distance extending inward and outward from the first partition wall have a total weight greater than the total weight of the reinforcement ribs existing within a range of the distance extending outward and inward from the second partition wall. With this arrangement, a region around the partition wall of the outer girder portion to be particularly reinforced can be effectively reinforced without wastefully increasing the weight of the pallet.
摘要:
The present invention relates to a multilayer laminate obtained by laminating a fiber-reinforced thermoplastic resin layer containing reinforcing fiber, on one or each side of a metal plate, and said multilayer laminate exhibits characteristics of the fiber-reinforced thermoplastic resin (e.g. freedom from rusting and corrosion, excellent sound damping and insulation effect, and excellent vibration damping effect) as they are, and moreover retains the excellent mechanical strength of the metal plate.