422 results about "Tool material" patented technology

A friction stir welding tool for welding high-strength materials with one or more of the following features: 1) a curved transition geometry structure at the shoulder face and probe interface; 2) a tool material selected on the basis of an ultimate tensile strength determined at or above the temperature of the tool processing temperature; 3) a compressive stress at the point of crack fatigue introduced by mechanical or chemical means; and 4) a threaded probe with a) a major to minor thread diameter ratio that increases toward the distal end of the probe and/or b) with a curved thread root.

The present invention provides a friction stir welding apparatus operable for welding one or more metals, metal alloys, or other materials. The friction stir welding apparatus includes a pin tool holder, a shoulder having a surface coupled to the pin tool holder, and a pin tool coupled to the pin tool holder, the pin tool at least partially protruding from the surface of the shoulder, wherein the pin tool is made of a consumable pin tool material. Optionally, the shoulder rotates at a predetermined rotational speed and is retractable into/extendable from the pin tool holder at a substantially constant rate. Optionally, the shoulder is also made of a consumable shoulder material that is at least partially incorporated into the volume of a joint to be welded. The consumable shoulder material comprises a material that is the same as, similar to, or dissimilar from one or more materials comprising a workpiece to be friction stir welded. Preferably, the pin tool rotates at a predetermined rotational speed and is retractable into/extendable from the surface of the shoulder at a substantially constant rate. The consumable pin tool material is at least partially incorporated into the volume of the joint to be welded. The consumable pin tool material comprises a material that is the same as, similar to, or dissimilar from one or more materials comprising the workpiece to be friction stir welded.

A tungsten alloy tool includes, in weight %, 3% to 27% rhenium, 0.03% to 3% hafnium, and 0.002% to 0.2% carbon, balance tungsten.

The invention relates to plastic forming technology and powder metallurgy technology, in particular to a tungsten carbide particle-enhanced iron-based powder metallurgy material and a preparation method thereof. According to a specific formula, the iron-based powder metallurgy material comprises the following components in percentage by mass: 85.0 to 90.0 percent of matrix material and 10.0 to 15.0 percent of enhanced phase tungsten carbide, wherein the matrix material comprises the following components in percentage by mass: 1.4 to 2.0 percent of copper, 1.7 to 2.0 percent of nickel, 0.9 to 1.2 percent of molybdenum, 0.7 to 1.6 percent of carbon and the balance of iron. In the invention, quick spark plasma sintering is adopted; and the obtained material has the characteristics of nearly full densification, high hardness, high indoor temperature bending strength, high high-temperature mechanical property and the like, can be used as a wear-resistant material, a tool material and the like, and can reduce the dependency of Chinese tool material production on import of precious metals such as vanadium, chromium and the like. The material has high cost performance and a good industrial production prospect.

The invention provides a high-speed tool steel gear cutting tool in which fracture or chipping does not occur at the cutting edge, and which realizes excellent cutting performance over long periods. Moreover, a method of manufacturing a gear cutting tool including: a step for quenching a tool material comprising high-speed tool steel and which has been rough processed to a shape corresponding to a final shape of a gear cutting tool, to transform a structure of the tool material into martensite, a step for temperling the tool material after quenching to transform any residual austenite dispersingly distributed throughout a matrix of the martensite structure formed by the quenching, into martensite, and a step for finishing the tool material after tempering to a final shape, is characterized in that the tool material after quenching is subjected to sub-zero treatment involving cooling and holding at a temperature of less than -150° C.

The present invention relates to a low density, water-soluble coring and tooling material used for the fabrication of composite parts. One aspect of the present invention relates to a lightweight, strong composite coring material that can be easily shaped and removed from cured composite parts. Another aspect of the present invention relates to a lightweight, strong composite tooling material that is easily tailored to provide a specific coefficient of thermal expansion and thermal conductivity, thus providing a tooling material that can be matched to the composite structure and material being fabricated.

A cutting tool having a cutting tip partially constructed from ultrahard materials. The cutting tip is oriented on the cutting tool such that the face has a reduced surface area. This has the effect of greatly reducing cutting tool costs and of maintaining the radius of the blade essentially constant even after repeated sharpening of the cutting tip.

This is a kind of Al2O3/ZrO2(Y2O3) nanometer compound ceramics knife material and its producing method. The material components include substance material and tenacity increasing phase. The substance material is Al2O3, and its grain granularity is 60 - 200 nm; according to volume percentage, its content is 65% - 90%, and the tenacity increasing phase ZrO2(Y2O3) nanometer powder containing 1.5% - 3.5% Y2O3 according to mol percentage; its grain granularity is 50 - 100 nm, and according to volume percentage, its content is 10% - 35%; its producing craft steps include producing substance material and nanometer powder of tenacity increasing phase by hydrochemistry method, produce grains, prepare material, ball mill to mix material, flan equal static pressure molding and sinter. The anti-bending strength of the prepared ceramics knife material ªÊ= 750 - 950 MPa, the fracture toughness KIC = 7.8 - 9.6 MPaíñm1/2, Weibull modulus m = 10 - 11.7, and durable intensity can get to 4 - 6 hours.

The invention discloses a crystal whisker toughened tungsten carbide cobalt-base hard alloy material and the preparing method. It takes powder metallurgy technology, employs tungsten carbide- cobalt as base material, adds titanium carbide crystal whisker and prepares toughened tungsten carbide cobalt-base hard alloy material through a certain process. It is characterized in that: (1) employs powder metallurgy technology and prepares out product with different shapes. (2) the rigidity is high, compression strength and toughness are good, the titanium carbide crystal whisker increases toughness on basis of guranteeing strength of said alloy, and it aslo can be used to replace cobalt and as adhesive phase, to improve material performance. (3) the process is simplea nd cost is low. The hard alloy material can be used in mechanics, metallurgy, mine, first-order instrument and military, and uesd to prepare kinds of blade and drilling button, and new knife tool material.

The invention discloses a PCD tool cutting edge processing method which includes the following steps that firstly, PCD composite piece cutting is conducted, wherein a linear cutting method is used for cutting the whole PCD composite piece into a plurality of PDC blades; secondly, blade welding is conducted, wherein the PCD blades are welded to a tool base body, and a PCD tool is obtained; thirdly, a cutting edge of the PCD tool is processed, wherein laser cutting processing is conducted on the PCD tool through a laser cutting device according to the design requirement of the shape of the tool, and the PCD tool with a flat cutting edge is obtained. The PCD tool cutting edge processing method improves the processing rate of the cutting edge of PCD tool materials, shortens the production cycle of the tool, reduces the processing cost of the PCD tool and obtains the good quality of the cutting edge of the PCD tool, according to the PCD tool processed through the laser cutting of the cutting edge, the breaking size of the cutting edge can be controlled within 2 microns in length and 2 microns in width, the breaking number is small, and the number of broken edges in the range of 10 mm is smaller than or equal to 5.

The invention relates to a numerical-control vertical-rotation repository and belongs to the field of automatic storage devices. The repository comprises a motor, a transmission mechanism and an electronic control system. The electronic control system comprises a PLC industrial personal computer and a remote monitoring unit. The transmission mechanism comprises a frame (2), a plurality of material boxes (3), a transmission wheel (4), four chain gears (5), two transmission chains (6), two chain guide rails (7), two slide ways (8), a plurality of material box supports (9) and a plurality of guide rods (10). According to the numerical-control vertical-rotation repository, the multiple material storage boxes can be driven to make reciprocating motion in the vertical direction along a circulation track through the transmission chains, and thus the numerical-control vertical-rotation repository overcomes the defects that a tool material rack of a traditional fixed truss structure is large in occupied planar space, fixed in repository position, incapable of being adjusted flexibly, high in labor intensity of material storing and taking operation, low in efficiency and the like.

The invention provides a gradient nano composite ceramic cutting tool material and a preparation method thereof, pertaining to the technical field of ceramic cutting tool materials. The cutting tool material has a symmetrical gradient layered structure, with the layer number of 3 or 5; according to volume percentage, the components of all the layers are 69 percent to 39 percent of AI2O3, 30 percent to 60 percent of micro TiCN, and 1 percent of micro MgO, micro Y2O3 and micro NiO; the layers which are symmetrical relative to the central layer have the same content of the components, and the thickness is symmetrically distributed, wherein, the AI2O3 of two surface layers is the mixture of nano AI2O3 and micro AI2O3, the volume content of the nano AI2O3 takes up 10 percent to 30 percent of the total AI2O3 volume content of the layer, and the AI2O3 of all the other layers is micro AI2O3; the TiCN content of each layer steadily increases layer by layer by 10 percent from the central layer to the outer layers, and the AI2O3 content steadily decreases layer by layer by 10 percent from the central layer to the outer layers. Powder layered filling in a laying way and hot pressed sintering technologies are adopted to prepare the material. The cutting tool material is characterized by uniform grain size distribution, high hardness, high bending strength, and good fracture toughness property and thermal shock resistance.

The invention discloses a surface cross-scale composite micro-modeling tool and a preparation method, and belongs to the technical field of machine manufacturing. The surface of a tool material is subjected to micro-modeling treatment of a recessed cavity morphology, a micron-size recessed cavity and a nanoscale groove are machined in a friction and abrasion sensitive area on the surface of a hardcoating, a combined way that the groove communicates with the cavity is adopted for distribution, and the cross-scale composite micro-modeling coating tool is obtained. In this way, the film-base combined strength of the coating tool is improved, and the wettability and lubrication performance of the surface of the coating tool are improved.

The invention provides coatings to achieve the best accommodation of chemical, physical, and mechanical properties desired in high performance and reliable glass molding and forming tools. The substrate material can be any ordinary die or tool material such as cast iron, stainless steel, platinum, tungsten carbide and silicon. A simple coating architecture consisting of a titanium adhesion layer and a Ni—Al—N or Ti—B—C—N working layer is provided. A NiAl working layer can meet the requirements of wear resistance in which abrasive and/or erosive wear is relatively low, while a Ti—B—C—N working layer is sufficient for processes operating at relatively low temperature or in vacuum or a protective environment. The coating architectures, from the coating/substrate interface to the outer most surface of the coating include an inner adhesion layer, an outer working layer and, optionally, one or more finctionally graded material layers. The invention also provides methods of making these coatings.

The invention relates to a graphene oxide coated Si3N4 composite powder added Al2O3-based ceramics cutting tool material and a preparation method thereof. The ceramics cutting tool material is characterized in that Al2O3 is used as a substrate; graphene oxide coats Si3N4 to be used as a reinforcement phase; and MgO, Ni and Mo are used as sintering additives. The preparation method of the ceramicscutting tool material comprises steps such as the step of preparing graphene oxide coated Si3N4 powder, the step of mixing cutting tool material powder, the step of drying and sieving, the step of cold pressing and die filling, and the step of thermally pressing and sintering. The graphene oxide coated SI3N4 composite powder is added into the nano composite ceramics cutting tool material, thus obviously improving the fracture toughness and the flexure strength of the material. According to the ceramics cutting tool material, the defect problems on microstructure, such as air pores which are caused by non-uniform dispersing and particle conglomerating of graphene oxide and nanoparticles in a composite ceramic substrate and other phenomena, and untight combination with the substrate, can beeffectively solved; and meanwhile, the problem of orientation of graphene in the ceramics substrate can be avoided.

The invention relates to the technical field of car diagnosis and discloses a car diagnostic instrument fault and maintenance suggestion information association and display method. On the basis of themethod provided by the invention, a mapping relationship of associated data such as fault information, maintenance information and vehicle models is established; types of the associated data are expanded; expression schemes of a car diagnostic instrument for the fault information can be expanded and enriched; efficiency of the car diagnostic instrument is improved; dependence of a diagnostic instrument user on other tool materials is reduced; online updating and issuing of the fault maintenance information are realized; processing complexity of multi-vehicle model and multi-batch fault information is improved; and fault information reading and fault positioning misjudgment probabilities are reduced.

The invention discloses a metal ceramic cutting tool material and a preparation method thereof. The material is prepared from the following powdery raw materials in percentage by weight: 13 to 22 percent of Ni, 10 to 16 percent of Mo, less than or equal to 1.0 percent of Cr2C3, 0.8 to 1.5 percent of C, 5 to 12 percent of WC and the balance of Ti(C,N). The particle sizes of particles of the powdery raw materials for the metal ceramic cutting tool material are matched in an optimal combination way. High-vacuum sintering is adopted in early stages of a preparation process, and low-pressure sintering is adopted within a sintering temperature range. The obtained metal ceramic cutting tool material is high in yield, stable in quality and high in comprehensive performance.

The invention provides a manufacturing method of bucket tooth and an applied mould thereof. Liquid bucket tool material is poured into a material storage cavity, a core puller is utilized to push a tooth cavity core and a pin hole core into a bucket tooth mould cavity; an upper mould and a lower mould are closed, and pressure is maintained to be 3000-15000kN; the lower cylinder of a hydraulic cylinder drives a pressure head to push the liquid bucket tooth material in the material storage cavity to be filled with the bucket tooth mould cavity at the linear speed of 10-100m/s, pressure is increased to be 500-5000kN, and pressure is maintained until the material is completely solidified. The core puller is utilized to pull out the tooth cavity core and the pin hole core; the lower cylinder drives a material tray to push an ejector rod to eject the bucket tooth and residue material, heat treatment is carried out, thus obtaining the bucket tooth of the invention; the lower cylinder returns, the material tray pulls the ejector rod and the pressure head to be descended and reset, and next operating cycle is executed. Material utilization is 85-95%, strength is improved by 20-30% compared with a sand-cast bucket tooth, impact toughness is improved by 15-25%, energy consumption is reduced by 20-30%, cost is reduced by 15-30%, and hour output can reach 150 pieces. Qualified bucket tooth can be manufactured without a dead head or sand mould.