353results about How to "Good impact resistance" patented technology

The invention provides a high-strength hot-dip zinc plated steel sheet which exhibits high TS-El balance, excellent stretch frangeability, excellent workability due to low YR, and excellent impact characteristics, and a process for manufacturing the same. A high-strength hot-dip zinc plated steel sheet excellent in workability and impact characteristics, having a composition which contains by mass C: 0.05 to 0.3%, Si: 0.01 to 2.5%, Mn: 0.5 to 3.5%, P: 0.003 to 0.100%, S: 0.02% or below, Al: 0.010 to 1.5%, and N: 0.007% or below and further contains at least one element selected from among Ti, Nb and V in a total amount of 0.01 to 0.2% with the balance being Fe and unavoidable impurities and a microstructure which comprises, in terms of area fraction, 20 to 87% of ferrite, 3 to 10% (in total) of martensite and retained austenite, and 10 to 60% of tempered martensite and in which the average grain diameter of the second phase consisting of the martensite, retained austenite, and tempered martensite is 3[mu]m or below.

The invention relates to a long-life anti-corrosive layer for a transmission tower and a method for making the same. The long-life anti-corrosive layer has a composite structure consisting of metal, non-metal and organic matter, wherein a thermally zinc-sprayed bottom layer is sprayed by electric arc by using zinc alloy; an epoxy zinc-rich heavy anti-corrosion enclosed middle layer comprises epoxy resin, zinc powder, a curing agent and a thinner, and is implemented via a high-pressure airless sprayer; a modified acrylic nano surface layer comprises isocyanate additive, modified acrylic resin, a mixture of pigment and filler, the curing agent and a solvent; and a coating method adopts conventional methods such as a brushing method, a rolling method, a spraying method and the like. The invention has the following beneficial effects that: the epoxy zinc-rich heavy anti-corrosion enclosed middle layer is used to enclose a zinc-sprayed layer instead of chromate, and has excellent anticorrosive property; the technology can replace hot galvanizing, lower the production cost, save energy source, eliminate pollution of the three wastes, and prolong the service life to more than 50 years for primary treatment; and the technology is applicable for the fields of electric power, transportation, chemical industry and the like, and has remarkable economic benefit and social benefit.

The invention discloses a kind of high strength ultrathin float glass, comprising the following ingredients: 60-62 wt% of SiO2, 12-15 wt% of Al2O3, 0.4-1.1 wt% of CaO, 6.5-8 wt% of MgO, 11-13 wt% of Na2O, 3-5 wt% of K2O, 1-1.2 wt% of Li2O, 0.5-1 wt% of ZnO, 1-1.5 wt% of B2O3, wherein, the total amount of SiO2, B2O3 and Al2O3 accounts for 73-76.5 wt%, the total amount of SiO2 and Al2O3 accounts for 72-75 wt%, the total amount of MgO and CaO accounts for 7-9 wt%, the total amount of Li2O, Na2O and K2O accounts for 15-18 wt%, and the molar ratio of n(K2O) to n(Na2O) is 0.15-0.3. The high strength ultrathin float glass has the characteristics of high chemical stability, high hardness, and large intensity, and simultaneously satisfies the special molding demands for ultrathin float glass.

The quartz crystal device includes a container body having: a recess; a pair of holding terminals formed on an inner bottom surface of the recess; and a crystal blank, both principal surfaces of which are provided with excitation electrodes with lead-out electrodes extending from the pair of excitation electrodes toward both sides of one end of the crystal blank. Both sides of one end of the crystal blank are fixed to the holding terminals using a conductive adhesive. Pillow members are provided on the inner bottom surface of the recess at positions corresponding to corners on both sides of the other end of the crystal blank, and the two pillow members are independent of each other. Alternatively, each holding terminal includes a first region formed near the facing holding terminal and a second region having a greater thickness than the first region formed far from the facing holding terminal.

The invention provides a demountable tanker truck and a hydraulic system thereof. The hydraulic system comprises a hydraulic pump, wherein the hydraulic pump supplies oil to a main oil cylinder and a moving oil cylinder through a multi-way valve, the multi-way valve at least comprises a main oil cylinder reversing valve and a moving oil cylinder reversing valve, and the hydraulic system also comprises a first position detection device and/or a second position detection device. The moving state of the main oil cylinder can be controlled according to the first position detection device, and the moving state of the moving oil cylinder can be controlled according to the second position detection device. The synchronism of the operation process of the main oil cylinder can also be ensured, and in addition, the protection on a main oil path can also be realized. The demountable tanker truck and the hydraulic system thereof have the advantages that misoperation can be reduced, the synchronism is high, the anti-impact performance is good, and the like.

The invention relates to the field of metal corrosion protection, in particular to a graphene/epoxy resin composite anticorrosive paint with high isolation and a preparation method. A graphene/epoxy resin masterbatch with a graphene content of 5wt% is added into common epoxy resin, then a diluent and an assistant are added and stirred to disperse uniformly to form a component A; and a component B is a curing agent. By weight percentage, the component A accounts for 53-93%, and the component B accounts for 7-47%. In the component A, the content of graphene is 0.03-2.3wt%. The two components are mixed evenly to obtain the graphene/epoxy resin composite paint, which is applied and dried by a conventional method so as to obtain a corrosion prevention coating with high isolation. Compared with the prior art, the graphene/epoxy coating prepared by the method provided by the invention consumes little graphene, also can realize uniform dispersion of graphene in the composite coating, thereby endowing the coating with the advantages of excellent water resistance, corrosion resistance, weatherability, acid-base resistance, impact resistance and artificial aging resistance, etc.

The invention discloses an energy-absorbing method based on a dynamic polymer. The method employs a dynamic polymer containing a cyclic organic borate bond and an optional supramolecular hydrogen bondfor energy-absorption, wherein the cyclic organic borate bond exists as a polymeric chain joint and/or cross-linked chain joint for the dynamic polymer and is a necessary condition for the formationor maintenance of the structure of the dynamic polymer. Due to dynamic reversibility of the cyclic organic borate bond, the dynamic polymer has an energy dissipation characteristic; as an energy-absorbing material, the dynamic polymer can provide the good functions of damping, shock absorption, sound insulation, noise abatement, impact resistance and the like; and the dynamic polymer is especiallyapplicable to the body protection of people during exercises, daily life and working, the body protection of the military police, explosion prevention, protection in airborne landing and aerial delivery, collision prevention of automobiles, anti-impact protection of electronic products and electric appliances, etc.

Provided is a hot-dip galvanized steel sheet which has a tensile strength TS of 590 MPa or higher and excellent processability and which, even when no strain is introduced thereinto by pressing, highly absorbs energy in a low-strain range up to about 5% and has excellent collision resistance. Also provided is a process for producing the steel sheet. The galvanized steel sheet has a composition which contains, in terms of mass%, 0.04-0.13% C, 0.7-2.3% Si, 0.8-2.0% Mn, up to 0.1% P, up to 0.01% S, and 0.01-0.1% Al, with the remainder comprising iron and incidental impurities, and has a structure which comprises, in terms of areal proportion, at least 75% ferrite phase, at least 1% bainitic ferrite phase, and 1-10% pearlite phase, has a martensite phase content of up to 10% in terms of areal proportion, and satisfies (areal proportion of martensite)/((areal proportion of bainitic ferrite)+(areal proportion of pearlite))<=0.6, and in which the ratio of the Mn concentration in the ferrite phase to the Mn concentration in the second phase is 0.70 or above.