39results about How to "Increase deformation resistance" patented technology

The invention discloses a stamping method of a top cover outer plate with a skylight; and the method belongs to the field of the manufacturing of automobile white sheet metal parts. The method comprises the following steps that (1) a trimmed mould surface is manufactured on the material of the top cover outer plate with the skylight; (2) the trimmed mould surface is shaped and trimmed; (3) the material of the top cover outer plate with the skylight is flanged and shaped; in the step (1), a process supplementing surface is arranged on the mould surface outside a flanged die line; a cylindrical bar and at least one step surface comprising a wave surface which is tangibly connected with the cylindrical bar and extends are arranged on the process supplementing surface, so that the material deformation resistance of the top cover outer plate with the skylight during a stamping process is increased, the flow rate of the material of the top cover outer plate with the skylight is uniform and the deformation is full, the control on rebounding is very effective; and consequently, the part quality is ensured, significant deformation which is produced in the stamping process of the top cover outer plate with the skylight and even the collapse problem are effective prevented.

The invention provides a method for restraining myriawatt-class laser welding thick plate upper surface defects. The method comprises the specific steps that 1, a welding plate (5) is machined, a metal particle conveying head (3) is installed on a laser welding head (1), and the conveying position of metal particles (16) is on the rear edge of a welding pool (27) lack of fusion; 2, the metal particles (16) are loaded into the metal particle conveying head (3), and a metal particle heating device is turned on to heat the metal particles (16) to the temperature from 900 DEG C to 1100 DEG C below the melting point; 3, the power of a laser is controlled, a laser beam (4) irradiates the welding plate (5) to form the welding pool lack of fusion, a metal particle conveying system controlled by compressed air is turned on, and the heated metal particles are pushed to the welding pool lack of fusion; 4, an inertia shielding gas annular air blow pipe (10) is turned on, and a laser welding head (1) and the metal particle conveying head (3) synchronously move to complete the welding process. According to the method, material losses generated by some splashes can be complemented, and welding bead subsidence is reduced.

A base 1 having a recess 2, and a cover 3 to be fitted into the recess 2 and to close an opening of the recess 2 are prepared. A stepped portion 4 is formed on the inner circumferential surface of the recess 2 at an intermediate depth for allowing a peripheral portion of the cover 3 to rest thereon. A cylindrical holder portion 5 having a cooling-medium accommodation recess 6 is formed integrally with the outer surface of the cover 3. The cover 3 is fitted into the recess 2 and placed on the stepped portion 4. A cooling medium for removing latent heat is placed in the cooling-medium accommodation recess 6 of the holder portion 5 of the cover 3. A probe 9 of a friction-stir-welding tool is plunged from outside into a peripheral portion of the base 1 around an opening of the recess 2 and into a peripheral portion of the cover 3. Then, during rotation of the probe 9, the base 1 and the cover 3, and the probe 9 are caused to undergo relative movement, thereby friction-stir-welding the base 1 and the cover 3 together. This method of manufacturing a hollow body can be carried out at low cost.

This invention provides a case-hardening steel excellent in cold forgeability and low carburization distortion property that exhibits low deformation resistance and high limit compressibility when cold, namely, a case-hardening steel excellent in cold forgeability and low carburization distortion property comprising, in mass %, C: 0.07% to 0.3%, Si: 0.01% to 0.15%, Mn: 0.1% to 0.7%, P: 0.03% or less, S: 0.002% to 0.10%, Al: 0.01% to 0.08%, Cr: 0.7% to 1.5%, Ti: 0.01% to 0.15%, B: 0.0005% to 0.005%, N: 0.008% or less, and the balance of Fe and unavoidable impurities, and having a metallographic structure comprising 65% or greater of ferrite and 15% or less of bainite.

Disclosed is a method to prepare polycondensation strengthened carbon nm pipe nylon compound material. Firstly, do acid procession to the carbon nm pipe, which is then to have polycondensation reaction with nylon monomer or salt of nylon monomer. The acidified carbon nm pipe has outstanding performance, and through the polycondensation way, compared with other nm material such as polynite or other compounding method like common mixing method, it has better mechanical property ; the polycondensation reaction can realize average distribution of carbon nm pipe as well as keeping its nm characteristics; by once synthesis to form, avoids degradation caused by heat procession and keeps stability of other performances, and its preparing method is simple.

An electrically commutated motor for a fuel pump having a rotor connected to a shaft and having plastic-bonded ferrite, with a fuel-resistant shaped body formed by the plastic-bonded ferrite, and a magnetic return element adjustable in relation to the shaped body.

The present invention relates to a plug connector device (1) which is provided with a connector housing (2) that is used for accommodating at least one socket component (3,3.1), wherein, at least one socket component (3,3.1) is accommodated in the connector housing (2) through a locked mode. The plug connector device is also provided with an unlocking device (4) with an unlocking lever (5) for releasing the locked accommodation of at least one socket component (3,3.1) in the connector housing (2), wherein the unlocking lever (5) is pivotably provided on a wall (6) of the connector housing (2) so the wall (6) is at least partially deformable for releasing the locking between the socket component (3,3.1) and the connector housing (2) when the unlocking lever (5) is operated.

The invention discloses a stable manufacturing method of an aluminium-alloy medium-thickness plate and belongs to the technical field of aluminium alloy. The stable manufacturing method comprises thefollowing steps: (S1) preparation of aluminium-alloy molten liquid; (S2) preparation of an aluminium-alloy cast ingot; (S3) destressing treatment; (S4) sawing of the aluminium-alloy ingot; (S5) solution treatment; (S6) multidirectional forging; (S7) prestretching; (S8) ageing treatment to obtain the finished product. The stable manufacturing method disclosed by the invention has the beneficial effects that by adoption of a reasonable machining process, the comprehensive properties of ductility, strength of extension, yield strength and the like of the aluminium-alloy medium-thickness plate areimproved.

The present invention relates to an energy absorption device (1) for a bumper arrangement of a vehicle, with a hollow longitudinal section (2) intended for deformation, a rolled-back region (3) adjoining the hollow longitudinal section, and an extension section (4) connected to the rolled-back region. In order to improve an energy absorption device of this type to the extent that obliquely acting accident forces can be absorbed with a high degree of efficiency in as simple a manner as possible, it is proposed, in an initial state prior to energy absorption, to orient the hollow longitudinal section (2) obliquely with respect to the axial direction of the extension section (4).

A self-locking belt retractor for a seat belt device of a motor vehicle with a belt shaft body and a profile head, and a blocking device with a blocking catch mounted on the profile head. When activated, the blocking device engages in a blocked position with a vehicle-affixed interlock for the purpose of blocking the belt shaft in the belt extension direction. A force-limiting device is disposed in the force transmission path from the belt shaft body to the blocking catch. The profile head is made as two parts, with a carrier component and an insert component which are affixed together. The insert component exhibits a higher resistance to deformation than the carrier component and, when the belt shaft is blocked, forms part of the force transmission path between the blocking catch and the force-limiting device.

The invention relates to a bumper (1) for a motor vehicle, particularly a front bumper, comprising at least two deformation elements (2) which are spaced apart from one another and whose central or longitudinal axes are aligned, when mounted, substantially parallel to the direction of travel of said motor vehicle, as well as a plurality of cross-members (3.1, 3.2, 3.3, 3.4) which have a closed profile and are arranged one above the other and connected to said deformation elements (2). In order for the bumper to provide relatively high resistance at a low weight such that in the event of a collision at speeds lower than 20 km/h, rearward displacement of the cross-member is limited in a targeted manner and movement of the bumper (1) upwards or downwards caused by the bumper of the other vehicle implicated in the collision is prohibited, said cross-members (3.1, 3.2, 3.3, 3.4) are formed from a group of at least three cross-members, each of these cross-members (3.1, 3.2, 3.3, 3.4) of the group having an at least five-cornered cross-sectional profile.

The invention discloses a manufacturing method of graphene composite aluminum wire-shaped materials. The manufacturing method comprises the steps that nano-powder graphene is prepared; graphene nano powder bodies are mixed with aluminum powders, grinding and pressing into alloy ingots are carried out in an oxygen-free environment; firing and dehydrating of the alloy ingots are carried out; moltenpure aluminum is introduced into the alloy ingots, and graphene composite aluminum rods are obtained by continuous casting and rolling; and the graphene composite aluminum wire-shaped materials with different wire diameters are obtained by drawing the graphene composite aluminum rods. According to the manufacturing method of the graphene composite aluminum wire-shaped materials, the problem that graphene and aluminum are not mutually soluble is solved, the strength of a single wire is improved greatly, the repetition and magnify are easy and pollution-free.

The invention relates to a bearing block (1) for a handbrake lever of a vehicle parking brake, comprising at least one fixing base (4, 5) or a mounting plate with a lower face that forms a screw-on surface (13), said bearing block (1) sitting on a support surface (14) of a supporting structure (12) by means of said screw-on surface. At least one fixing point (10, 11) with a through-bore (15) is provided in order to fix the bearing block (1) on the supporting structure (12), said through-bore being penetrated by a fixing screw (16), which corresponds to a nut (17) that is joined to the supporting structure (12) by a welding process, or by a threaded bolt, which is rigidly connected to the supporting structure (12) by means of a welding process. Advantageously, a concavity (19) or a recess into which the through-bore (15) is introduced is provided in the region of the at least one fixing point (10, 11) in the screw-on surface (13) of the at least one fixing base (4, 5) or of the mounting plate.

The invention provides a vibration reduction foot pad, a compressor and an air conditioner, relates to the technical field of vibration reduction parts, and aims to improve the safety of the compressor under large impact while giving consideration to the vibration reduction effect of the foot pad. The damping foot pad comprises an elastic main body, a containing cavity is formed in the elastic main body, and resistance increasing liquid is arranged in the containing cavity. When the vibration displacement of the vibration reduction foot pad exceeds a certain value, the deformation resistance of the elastic main body can be improved by extruding the resistance increasing liquid, and/or when the vibration speed of the vibration reduction foot pad exceeds a certain value, the deformation resistance of the elastic main body can be improved by increasing the viscosity of the resistance increasing liquid. According to the vibration reduction foot pad, the rigidity of the foot pad is passively controlled according to the vibration displacement and the vibration speed of the compressor under different working conditions, the vibration reduction performance of the compressor under the operation working condition is improved, and the requirements of the compressor for different performance parameters of the vibration reduction foot pad under different working scenes are met.