170results about How to "Reduced deformability" patented technology

The invention discloses a petroleum wellhead annular space sealing device. The petroleum wellhead annular sealing device is used for sealing an annular space between a wellhead sealing body and a petroleum pipe, at least one annular groove is formed in the inner wall surface of the sealing body, and the sealing body is provided with an injection hole which is communicated to a centrifugal end of the annular groove; the petroleum wellhead annular space sealing device further comprises a sealing ring, a power ring, and an injection component, wherein the sealing ring is embedded into the annular groove, the sealing ring is used for sealing the groove in the radial direction by being jointed to the wall surface of the annular groove, and is used for sealing the annular space by being jointed to the outer wall of the petroleum pipe, the power ring is installed in the annular groove and is located between the groove bottom of the annular groove and the sealing ring, and the injection component is installed in an inlet of the injection hole, and is used for injecting fluid with given pressure so as to make the power ring push the sealing ring to tightly press the petroleum pipe. In the petroleum wellhead annular space sealing device, the requirement for deformation capability of a sealing part is low, and meanwhile the sealing capability can be effectively improved.

The invention features devices and methods for detecting, enriching, and analyzing circulating tumor cells and other particles. The invention further features methods of diagnosing a condition, e.g., cancer, in a subject by analyzing a cellular sample from the subject.

A structured composite is comprised of particulates having particle size distribution of at least two modes and a binder. The particle size distribution is preferably bi-modal or tri-modal. The composite may further contain a density-modifying agent for modifying the density of the composite. The particulates are preferably substantially spherical and may be ultra lightweight (ULW) materials. The resulting composites exhibit the requisite strength to survive downhole imposed stresses and temperatures.

Thermoset polymer particles are used in many applications requiring lightweight particles possessing high stiffness, strength, temperature resistance, and/or resistance to aggressive environments. The present invention relates to the use of methods to enhance the stiffness, strength, maximum possible use temperature, and environmental resistance of such particles. One method of particular interest is the application of post-polymerization process step(s) (and especially heat treatment) to advance the curing reaction and to thus obtain a more densely crosslinked polymer network. The most common benefits of said heat treatment are the enhancement of the maximum possible use temperature and the environmental resistance. The present invention also relates to the development of thermoset polymer particles. It also relates to the further improvement of the key properties (in particular, heat resistance and environmental resistance) of said particles via post-polymerization heat treatment. Furthermore, it also relates to processes for the manufacture of said particles. Finally, it also relates to the use of said particles in the construction, drilling, completion and/or fracture stimulation of oil and natural gas wells; for example, as a proppant partial monolayer, a proppant pack, an integral component of a gravel pack completion, a ball bearing, a solid lubricant, a drilling mud constituent, and/or a cement additive.

The invention discloses a circular diamond saw blade bit and a manufacturing method thereof. The circular diamond saw blade bit is made of diamond particles and matrix powder used for consolidation of the diamond particles. The matrix powder comprises, by mass percent, 40%-80% of Fe, 15%-30% of Cu, 0%-10% of Ni, 2%-8% of Sn, 0%-10% of Co, 0%-5% of Me and the balance inevitable impurities. Me is at least one of Mn, Ti, Si, Cr, P and Al. The manufacturing method comprises the steps of mixing raw materials, conducting cold-press molding and free sintering. The manufacturing method is simple and can effectively avoid the loss of a graphite mould and reduce manufacturing cost. Meanwhile, a volume production requirement can be met, and blade bits in complicated shapes can be produced; production efficiency is prolonged, and the service life of the tool is similar to that of a tool manufactured through a hot-press sintering method; the purpose that high-quality diamond cutting tools are produced under the condition of low cost can be achieved; and the circular diamond saw blade bit and a manufacturing method thereof are easy to popularize in an industrialized manner.

In a wheel-support rolling bearing unit, in order to made a flange 6 thinner and thus lighten the bearing unit without impairing fatigue strength, machinability, and workability after forging, the composition of the alloy steel constituting the flange attached member (hub ring 2), the surface hardness of the root portion 14 on the axial outside surface side of the flange 6, and the surface roughness, are stipulated to thereby improve the durability ratio (fatigue limit strength/tensile strength) of the flange 6. In one aspect, the member is made from an alloy steel containing C: 0.5 to 0.65 weight %, Mn: 0.3 to 1.5 weight %, Si: 0.1 to 1.0 weight %, Cr: 0.01 to 0.5 weight %, S: 0.35 weight % or less, and any one type or more selected from 0.01 to 0.2 weight % of V, 0.01 to 0.15 weight % of Nb, and 0.01 to 0.15 weight % of Ti, with the rest being Fe and inevitable impurities, and the oxygen contents is 15 ppm or less. Moreover, the surface hardness of the inner raceway 7a formed with the hardened layer, is between Hv 650 and 780, and the surface hardness of a portion not formed with the hardened layer is between Hv 230 and 300.

An auxiliary handle for a motor-driven hand tool has a mounting device which forms an upper region and provides a force-transmitting and/or form-locking connection to a hand tool; a handle forming a lower region, a damping element forming an intermediate region and located at least locally between the mounting device and the handle, the damping element having a damping material with which, during an operation of a hand tool, it dampens vibration transmitted through the mounting device to the handle, the damping element in its damping region acting for damping having at least one reinforcing region that has a lower deformability than a remaining part of the damping region and during deviations of the handle in at least two different directions relative to the mounting device causes differently great elastic counter forces.

The invention relates to a rolling technique used for producing superfine crystal magnesium alloy plate band materials. The rolling technique is characterized in that a thin near-net shaped magnesium alloy cast-rolled plate is fast heated to hot rolling temperature, then treated with hot rolling with first pass great deformation magnitude, and then treated with low-temperature softening annealing; and a hot rolling machine is used for regulating the plate to a regulated thickness by multi-pass cold rolling, and the plate is treated with controlled hot treatment to form a finished magnesium alloy plate with crystal grains less than 10 micrometer. The cost of the production method of the invention is low, the technical procedure is short, and the product quality is high.

A steel profile clamp is used to join flanged component parts. The profile clamp has at least partially conical side walls that are bent radially inwardly. The profile clamp has welding joints to maintain the shape of the clamp. The steel is martensitic for increased load-carrying capacity of the joint. The steel material, in an ambient temperature range of 20° C. to 750° C., has a coefficient of thermal expansion that is at least 0.3x10-6 m/m° C. lower than that of the coefficient of thermal expansion of a ferritic casting material. The method for manufacturing the profile clamp includes prequenching and tempering the material of the profile clamp when it is in the form of a strip. After forming and welding the profile clamp, the weld is subject to induction tempering.

The invention belongs to the technical field of preparation of long-fiber-reinforced master batches, and particularly relates to a high-rigidity creep-resistant long-fiber-reinforced master batch for wood plastic products and a preparation method thereof, and an impregnation mold for the preparation method. The master batch comprises the following components in percentage by mass: 35-80% of thermoplastic, 10-55% of fiber bundle, 0.3-3% of surface treating agent, 5.5-9.2% of compatilizer and 0.5-1.5% of antioxidant. By adopting the specific thermoplastic, compatilizer and other materials and utilizing the specific impregnation mold, the long fiber bundle is sufficiently impregnated in the master batch so as to lower the porosity and provide impregnation effect, and thus, the master batch has higher rigidity and creep resistance. After being added into the wood plastic profile product, the master batch enhances the bending modulus, strength and creep resistance, and can perform the function of reducing deformation in the profile use process, so that the application performance and long-term usage stability of the obtained WPC profile are improved.

The invention relates to a bamboo flooring and processing technology thereof, in particular to a bamboo flooring with cut surfaces in staggered flat compression and lateral compression and processing technology of the bamboo flooring. The technology includes cutting floorings which are arrayed by means of staggered flat compression and lateral compression by certain angles; and then adopting the cut surfaces as surface patterns of the bamboo flooring and manufacturing the bamboo flooring. Blank strips used as units are glued and pressed to form the bamboo flooring, the blank strips are cuboid-shaped, and transverse bamboo blocks and vertical bamboo blocks are alternately arrayed, glued and pressed to form the blank strips. Deformation force among bamboo chips is mutually offset, a unique angular cutting mode is adopted, original internal stress of the bamboo chips is destroyed, and deformation capacity of the bamboo flooring is greatly reduced. In addition, various different surface patterns can be processed, ornamental property of the bamboo flooring is greatly enhanced, and the additional value of a product is increased.

The invention discloses a connecting structure for an assembly type concrete shear wall edge member. vertical connecting reinforcing steel bar, which can be provided with an upset head, is reserved through a hole reserved in a large-diameter metal bellows, and is sleeved with a continuous spiral stirrup; then the vertical connecting reinforcing steel bar and the continuous spiral stirrup are commonly inserted into the large-diameter metal bellows; and fine aggregate concrete (or a grounding material) is poured into the metal bellows, so that the reliable connection of the edge member is realized. Due to reliable anchoring of the vertical connecting reinforcing steel bar, the optimization of the diameter, the quantity and the plane arrangement of the vertical connecting reinforcing steel bar, and the increase of the wet joint area on a splicing surface, full exertion of the bearing capacity of the shear wall is ensured; and multiple effective restrain for the subsequentlly-poured fine aggregate concrete (or the grouting material) is formed by the shear wall stirrup, a horizontal tie bar, the metal bellows and the continuous circular spiral stirrup, and thus the integral performance of the part is remarkably improved. According to the connecting method for the edge member, which is provided by the invention, the stress continuousness of the vertical steel reinforcing bar is ensured, the deformaility and the ductility performance of the vertical steel reinforcing bar are remarkably improved, and the shock resistance of the assembly type concrete shear wall is improved. Meanwhile, the method is simple in manufacturing process and facilitates the practice and application.

The invention provides a kind of prestress steeling reinforcement method for a kind of concrete pile, the method includes following steps: (1) construction preparing; (2) surface preprocess; (3) sets pile corner reinforcing steel and uses clamp to fix them; (4) heats and stretch-draw the banding board, then welds and fixes; (5) pours with high intensity adhesive material between the steel angle and the intervals among the piles; (6) checking; (7) restores the outer decoration layer. The invention uses the improvement of intensity and deformation performance in condition of three-axis pressed to upgrade the bearing of component, it doesn't increases the cross section, thus it won't affect the visible effect in the room; reduces the stress delaying effect. The shake resisting grade is upgraded, the cost is low.

An eyewear assembly for attachment to a hard hat, the hard hat including a main body and a visor, the eyewear assembly including at least one eyewear member, a mounting means to attach the set of eyewear to the headwear including an arcuate body adapted to substantially correspond to the shape of the visor of the hard hat, a rearwardly projecting locating tongue and at least one deformable attachment portion such that the mounting means is clamped to the visor of the hard hat by the at least one deformable attachment portion and at least one rotation mechanism associated with the mounting means and the eyewear to allow movement of the at least one eyewear member relative to the at least one mounting means between a use position in front of a wearer's eyes and a stored position adjacent the visor of the headwear.

The invention provides a preparation method of a carbon nanotube reinforced foamed aluminum composite material for vibration attenuation and energy absorption, relates to the manufacturing of an alloy with open or closed pores, and specifically relates to the preparation method of the carbon nanotube reinforced foamed aluminum composite material for vibration attenuation and energy absorption with urea as a pore-forming agent and nickel as a carbon nanotube synthesis catalyst; the preparation method comprises the following steps: preparing the mixed powder of nickel nitrate, urea and aluminum powder; preparing a foamed aluminum blank; and preparing the carbon nanotube reinforced foamed aluminum composite material. The method is used for overcoming the defects of structural defect, low mechanical properties and low buffer energy-absorption property, large density and no lightweight property of the foamed aluminum materials prepared in the prior art, complex preparation process, relatively high cost and difficult realization of functional structure integration of the foamed aluminum serving as an energy-absorption material.

The invention relates to the production of multi-layered concrete moulded bodies in a moulding machine comprising a moulding insert having a plurality of mould cavities. Relief structures are arranged in the lateral walls of the mould cavities and are dimensioned in such a way that projections formed on the moulded body when the filled concrete material is compacted engage in the relief structures, thereby creating sufficient retaining force for compensating the net weight of the moulded body and enabling the moulded bodied to be extracted from the mould cavities as a result of additional demoulding forces and causing elastic deformation of the projections without any material being cut off from the projections.

The invention relates to the technical field of road engineering construction, and particularly to a road building method which solves the problems that an existing road engineering construction road structure is relatively single, easy to damage, difficult in repairing, and high in building cost. The building method comprises the steps of mixing at least biological enzyme, broken stones, soil, an additive and water according to a certain ratio and rolling to form a biological enzyme soil solidified base layer and a subbase layer (enzyme soil solidified base layer for short), and then paving a cement mixing material of the biological enzyme, rubber powder and fibers modified for multiple times on the enzyme soil solidified base layer through a paving machine, rolling and forming to obtain a novel road pavement structure based on the enzyme soil solidified base layer and a multi-element repeated-modified roller compacted concrete pavement. By adopting the road building method of the novel road pavement structure, the difficulties such as high requirement on materials selected by building a road pavement, high cost, complicated construction, difficulty in maintenance, serious environment pollution and the like are solved, and the use performance of a road is greatly improved; the novel road pavement structure has the advantages of environment friendliness without pollution, resource saving, and the like, and is remarkable in economical benefits and social benefits.

A steel profile clamp is used to join flanged component parts. The profile clamp has at least partially conical side walls that are bent radially inwardly. The profile clamp has welding joints to maintain the shape of the clamp. The steel is martensitic for increased load-carrying capacity of the joint. The steel material, in an ambient temperature range of 20° C. to 750° C., has a coefficient of thermal expansion that is at least 0.3x10-6 m/mK lower than that of the coefficient of thermal expansion of a ferritic casting material. The method for manufacturing the profile clamp includes prequenching and tempering the material of the profile clamp when it is in the form of a strip. After forming and welding the profile clamp, the weld is subject to induction tempering.

A computer support frame structure includes two supports each having a bottom section. The bottom sections transversely extend on the same horizontal face. A middle support section is connected with one end of the bottom section. The middle support section obliquely upward extends from the end of the bottom section. A rest section further transversely extends from an upper end of the middle support section in a direction approximately in parallel to the direction of the bottom section. An upper connection member is secured between the middle sections of the middle support sections. A lower connection member is secured between the middle sections of the bottom sections. The upper and lower connection members and the two supports together forma four-bar linkage to enhance the structural stability, whereby a computer can be securely placed on the rest sections.