47results about How to "Improves drawability" patented technology

A steel wire rod is obtained, in which a gas flow rate during gas stirring in molten steel treatment is controlled to be 0.0005 Nm³/min to 0.004 Nm³/min per molten steel of 1 ton, thereby the rod satisfies a specified composition, and oxide base inclusions in any section including an axis line of the steel wire rod satisfy the following composition X, the inclusions having width of 2 Am or more perpendicular to a rolling direction, wherein the number of the oxide base inclusions of the following composition A is 1 to 20, and the number of the oxide base inclusions of the following composition B is less than 1:

• • composition X: when composition of inclusions is converted to Al₂O₃+MgO+CaO+SiO₂+MnO=100%,
  • Al₂O₃+CaO+SiO₂≧70% is given.
  • composition A: when composition of inclusions is converted to Al₂O₃+CaO+SiO₂=100%,
  • 20%≦CaO≦50% and Al₂O₃≦30% are given; and
  • composition B: when composition of inclusions is converted to Al₂O₃+CaO+SiO₂=100%, CaO>50% is given. In the steel wire rod, drawability and fatigue properties are improved to the utmost.

Method of and apparatus for continuously manufacturing highly oriented super micro filaments with a diameter of 5 μm or less from most of thermoplastic polymers stably by a simple and convenient means without requiring any special apparatus of high accuracy and high level, characterized in original filaments supplied from a filament supply means are heated by infrared beams and the heated filaments are drawn by tension provided by their own weight or under an applied tension of 1 MPa or less, and are drawn to 1000 times or more.

An oriented implantable biodegradable multimodal device is disclosed. The orientated implantable biodegradable multimodal device includes a blend of a first polymer component having a first molecular weight (mwt) together with at least a second polymer component having a mwt which is less than that of the first component. The polymer within the blend may be in a uniaxial, biaxial or triaxial orientation. Also disclosed is a composite thereof with matrix polymer, processes for the preparation thereof and the use thereof as an implantable biodegradable device such as a high strength trauma fixation device suitable for implantation into the human or animal body. As examples the high strength trauma device may take the form of plates, screws, pins, rods, anchors or scaffolds.

A dynamically vulcanized alloy containing an elastomer and a thermoplastic resin is prepared by a process wherein supercritical fluid is injected into the thermoplastic elastomeric material as the material is mixed in an extruder. The material is mixed under conditions such that the thermoplastic elastomeric material is dynamically vulcanized wherein the elastomer forms a discontinuous dispersed of small particles in a continuous phase of the thermoplastic resin. The DVA material may then be directly formed into film or sheets by the use of at least one set of rolls located adjacent to the extruder outlet.

A welding wire capable of improving wettability between weld metal and wire surface, thereby providing excellent drawability and weldability in resistance welding of wires is provided. A wire is dipped in an aqueous solution of a sulfide of alkali metal or ammonium sulfide to generate iron sulfide (FeS2 or FeS) on the surface, whereby the wettability of weld metal to wire surface is improved in the resistance welding of the resulting wires. The S in the iron sulfide is preferably present in an amount of 0.1-20 atomic % as measured by X-ray photoelectron spectroscopy. At least one sulfide of S with an element of Mn, Ti, Cu, Cr, Ni, Al or Zn can be used instead of or in addition to the iron sulfide.

The invention relates to high-carbon steel wires comprises 0.65-1.20% of C, 0.05-1.2% of Si, 0.2-1.0% of Mn, 0-0.35% of Cr, 0-0.02% of P and S, wherein over 80% of the metallic structure comprises pearlite structure.

Problem

There is proposed an innovative cross-sectional structure, with an idea contrary to the conventional one, utilizing the non-reactivity between Cu and Ta (or between Ag and Nb, Ta) in a high-temperature short-time heat treatment, thus achieving (1) the suppression of the low magnetic-field instability, (2) excellent wire drawability of a precursor wire, and (3) the reduction of the cost required for the incorporation of a stabilizer.

Means for Resolution

There is proposed a structure having an assembly of a plurality of single wires, wherein the assembly is covered with an outer cover (skin) formed from Nb or Ta, wherein each of the single wires has an Nb/Al composite filament region which is formed from a composite of Nb and Al mixed in an Nb:Al molar ratio of 3:1, and which is covered with a partition formed from Nb or Ta, and further covered with an interfilamentary barrier formed from Cu or Ag disposed around the partition.

The invention provides a device and a process adopted for rod-making by continuous casting and continuous rolling of red impure copper. The device adopted for rod-making by continuous casting and continuous rolling of red impure copper comprises a launder which tilts upwards and is provided with an electromagnetic field, and deoxidizer is contained in an inner wall of the launder. According to the process for the rod-making by the continuous casting and continuous rolling of red impure copper, on the basis of a prior rod-making process by continuous casting and continuous rolling of red impure copper, after steps of melting, oxidization and restoring, impurities are removed and oxygen content is lowered by further refining, and casting is carried out to increase surface quality, conductivity, plasticity and tensibility of a copper rod. The surface quality, conductivity, plasticity and tensibility of the copper rod manufactured by the device and the process provided by the invention are more excellent, and manufacturing cost is low.

The invention discloses an ultra-low carbon wire rod with high conductivity and a production method of the wire rod. The ultra-low carbon wire rod comprises main chemical components including, by mass percent, not larger than 0.012% of C, not larger than 0.012% of Si, not larger than 0.08% of Mn, not larger than 0.015% of P, not larger than 0.010% of S, not larger than 0.080% of Sieq, and the balance iron and inevitable impurities. The production method comprises smelting, casting, wire rolling and wire cooling. The specification of the ultra-low carbon wire rod is phi5.5 to 9.0mm, the conductivity is larger than or equal to 16.3%, and due to the high conductivity, the good pulling and drawing and good comprehensive mechanics property of the wire rod, the thickness of the copper layer coated on the surface of the wire during downstream customer machining can be effectively reduced, and therefore the production cost is reduced.

The invention relates to a manufacturing method of ternary ammonification modified T400-stage 12K carbon fiber. Acrylonitrile, itaconic acid and 2-acrylamido-2-methylpropanesulfonic acid are taken as copolymerization monomers for performing polymerization of a ternary free radical solution, ammonification modification is performed on an obtained spinning solution and then spinning is performed through a 12K spinning nozzle. 12K raw yarn is prepared by performing solidification, water washing, hot water drafting, oiling and drying on a tow, and then performing steam drafting and heat setting treatment. Pre-oxidation and carbonization treatment are further performed on the obtained raw yarn to prepare the carbon fiber. According to the manufacturing method disclosed by the invention, the non-toxic solid powder raw materials are taken as the copolymerization monomers, the ammonification modification treatment is performed on the spinning solution, the hydrophilicity and the draftability of the spinning solution obtained by the method are obviously improved, and the compactness, the orientation degree and the crystallinity of the obtained raw yarn after the spinning process are also obviously improved. After the pre-oxidation treatment of the raw yarn, gradient carbonization is performed in a low-temperature carbonization furnace at the temperature of 400-750 DEG C, drafting treatment is further performed, and the prepared carbon fiber has the advantages of high mechanical properties and strong binding force.

The invention concerns a ferromagnetic alloy whereof the chemical composition comprises, in wt. %: 32.5% ≦Ni ≦72.5%; 5% ≦Cr≦18%; 0.01% ≦Mn≦4%, C≦1%; optionally one or more elements selected among Mo, V, Co, Cu, Si, W, Nb and Al, the total contents of said elements being not more than 10%, the remainder being iron and impurities resulting from preparation, the chemical composition further satisfying the following relationships: Cr−1.1Ni+23.25≦0%; 45Cr+11Ni≦1360 ;Ni+3Cr≧60% if Ni≧37.5; Cr≧7.5 if Ni≦37.5. The invention also concerns the use of said alloy for making heating elements for induction heated cooking appliances.

A high-strength cold rolled steel sheet having excellent deep drawability and bake hardenability, with a tensile strength ≧440 MPa, an average r-value ≧1.20 and a bake hardening value ≧40 MPa, is obtained by subjecting a steel raw material having a chemical composition including C: 0.010-0.06 mass %, Si: more than 0C:\Users\ejensen\Desktop\!TEMP\.5 mass % but not more than 1.5 mass %, Mn: 1.0-3.0 mass %, Nb: 0.010-0.090 mass %, Ti: 0.015-0.15 mass % and satisfying

(Nb/93)/(C/12)<0.20 to hot rolling, cold rolling and then to annealing including steps of heating to a temperature of 800-900° C. while a temperature region of 700-800° C. is an average heating rate <3° C./s, and soaking and thereafter cooling at a rate ≧5° C./s from the soaking temperature to a cooling stop temperature ≦500° C. to thereby form a microstructure including ferrite phase with an area ratio ≧70% and martensite phase with an area ratio ≧3%.

The invention relates to a preparation method of a high-strength high-conductivity copper-silver alloy micro-wire, and belongs to the technical fields of copper alloy material preparation, non-ferrouswire processing forming and electromagnetic wire manufacturing. The preparation method comprises the following steps that high-purity electrolytic copper plates and high-purity silver plates are putin a vacuum induction furnace according to the mass percent of a copper-silver alloy for smelting; smelting, solidification, purification and impurity removal are conducted on cast ingots by adoptinga vacuum electron beam to prepare high-purity copper-silver alloy ingots; the copper-silver alloy ingots are machined, and sheathing vacuum extrusion is conducted; surface defects of an extruded bar material are removed, and cold rolling is conducted; multi-pass drawing is conducted on the cold rolled bar material on a multi-mold drawing machine to obtain a wire blank; and after vacuum heat treatment is conducted on the wire blank, and multi-mold drawing is conducted on the micro wires. According to the preparation method, the drawing micro-process is stable, and is free of broken ends duringdrawing, the yield is high, the production efficiency is high, the industrialized, large-scale and stable volume production is achieved, the micro-wire of 0.015mm-0.05 mm is prepared, and the method has good engineering application on micro-electromagnetic wires.

Polyamide terpolymer compositions, which contain biobased monomers and are suitable for making shaped articles, are disclosed. Comprised of three monomeric species polymerized randomly, including hexamethylene diamine, adipic acid and a bio-based monomer, the compositions are easier to process and have better dye uniformity than polyamides formed from melt-blended biobased components, and are comparable in dyeability, color fastnessand appearance retention performance to non-biobased polyamide copolymers.

Provided is a high-carbon steel wire which gives steel wires having high strength and has excellent suitability for wiredrawing and which after being wiredrawn, has excellent fatigue properties. The high-carbon steel wire has an adequately regulated chemical composition and has a pearlite structure in an areal proportion of 90% or more. In 2,000 μm² of the pearlite structure, the number of BN compound grains having an equivalent-circle diameter of 100 nm or more but less than 1,000 nm is 100 or less (including 0) and the number of BN compound grains having an equivalent-circle diameter of 1,000 nm or more is 10 or less (including 0).

The invention provides a plant-derived nylon master batch. The plant-derived nylon master batch is mainly prepared by blending and melting nylon master batch and modified sarcandra glabra extract; themass ratio of the nylon master batch to the modified sarcandra glabra extract is 84:16. The invention further provides a preparation method of the cellulose fiber. The plant-derived nylon master batch prepared by the preparation method is regular in shape and free of continuous particles, no debris is generated, the particle size uniformity is 95.9-97.2%, and the water content is 0.081-0.089%; for the prepared fiber, the fiber breaking strength is 7.4-8.1 cN/dtex, the elongation at break is 36.2-37.4%, the fiber moisture absorption rate is 11.8-12.2%, and the moisture absorption performance is durable after multiple times of washing.

The invention creatively discloses a high-strength high-modulus polyethylene fiber circular-blow cooling device, which comprises a gas storage tank (15) for storing cooling gas, a throttling valve (13) and a cooler (11), wherein the cooler (11) comprises a fixed seat (6) fixed on a spinning pack (1), and an inner barrel body (7) and an outer barrel body (8) which are correspondingly fixed on the fixed seat (6), the inner barrel body (7) is provided with a tow (2) passage, an annular pressure equalization chamber (9) with a sealed upper port and an opened lower port is formed between the inner barrel body (7) and the outer barrel body (8), the lower port of the annular pressure equalization chamber (9) is soaked in coolant (4) of a freezing water tank (3), multiple gas inlet holes (10) for cooling the tow (2) are uniformly distributed on the barrel wall of the inner barrel body (7), at least one gas inlet is arranged on the outer barrel body (8), and at least one exhaust port is arranged on the inner barrel body (7). After the structure is adopted, the cooling device has the advantages of simple and reasonable structure, high circulating rate, high cooling efficiency, good spinning quality and the like.

The invention relates to a method for adding bubbles in an EDC water tank to produce a lead-bath-free wire. The method comprises the steps that firstly, water cooling and spinning are conducted aftersteel blank rolling; secondly, a wire ring is subjected to temperature reset and then enters an EDC system to be subjected to phase change treatment; thirdly, a bubble generator is arranged in the EDCwater tank, hot water in the EDC water tank is in a steam-water mixing state, a steam film is broken through the bubbles at the cooling earlier stage, the earlier stage cooling speed is increased, the bubbles are used for isolating the wire from the hot water part in the cooling later period, and the cooling speed is reduced; and fourthly, the wire cooled through the EDC water tank can be directly drawn into a steel wire without lead bath. According to the method, the lead bath cooling effect can be reached or approached, and the wire drawability and steel wire performance are improved by improving the cooling condition and the wire structure performance; and the method can be adopted for replacing the lead bath, energy can be better saved, and the steel wire production cost is reduced.

A door control device includes: an electric motor control unit configured to drive, in response to a closing command for closing a door that is driven to be opened and closed by an electric motor, the electric motor; a door closed state detection unit configured to detect a closed state of the door; and a lock command output unit configured to output a lock command to lock a locking device of the door, upon the closed state being detected when a predetermined waiting time has passed after the electric motor was driven by the electric motor control unit in response to the closing command and the closed state was detected by the door closed state detection unit.

An object of the present invention is to provide a rolled material for high strength spring, which has excellent wire drawability even when suppressing the addition amount of an alloying element, and which can exhibit corrosion fatigue properties after quenching and tempering.

The present invention provides a rolled material for high strength spring, including C, Si, Mn, P, S, Al, Cu and Ni, wherein an amount of nondiffusible hydrogen is 0.40 ppm by mass or less, and an area ratio of ferrite expressed as a percentage satisfies an inequality expression (1) below, and a total area ratio of bainite and martensite is 2% or less:

Ferrite area ratio<{(0.77−[C])/0.77−[C]/3+0.08}×100  (1)

where [name of element] in the above inequality expression (1) means a content expressed in % by mass of each element.