9results about How to "Uniform and stable performance" patented technology

The present application relates to the technical field of rail production process, in particular to a production method for improving wear resistance of channel rail for tram. After universal rolling, compressed air is applied to the channel rail for forced cooling in parts. In the first stage, supersonic air jet cooling is applied to the rail head tread, rail head running edge, rail head left side, rail lip and rail bottom to control the cooling speed of each part. In the second stage, supersonic air jet cooling is continuously applied to each part of the rail to control the cooling speed of each part. In the third stage, subsonic air jet cooling is applied to each part of the rail to control the cooling speed of each part, and then the rail is naturally cooled in air. The quenching effect of the channel rail tread and running edge is improved, the pearlite interlamellar spacing is refined, the rail strength and hardness are improved, and the channel rail has good wear resistance.

This invention discloses a low-cost rare earth weathering steel and its production process. The chemical composition and mass percentage of the weathering steel are as follows: C 0.06%~0.12%, Si 0.25%~0.50%, Mn 0.60%~1.00%, P 0.07%~0.12%, S≤0.005%, Cu 0.15%~0.40%, Cr 0.30%~0.50%, Ce 0.002%~0.015%, Alt 0.020%~0.050%, Ti 0.02%~0.08%, N≤0.006%, with the balance being Fe and unavoidable impurities. This weathering steel uses rare earth oxides added to refining slag, and a high-alkalinity, low-oxidizing refining process to improve rare earth yield. Rare earth inclusions and nozzle turbulence are modified through calcium-magnesium composite treatment, achieving rare earth micro-alloying to replace high-alloy additions. While meeting the mechanical properties and high corrosion resistance of 355MPa grade weathering steel, it significantly reduces alloy costs by more than 15% compared to traditional weathering steel. The process flow is compatible with existing production lines and is suitable for industrial mass production.

This invention discloses an integrated waterproofing and sealing construction system for the intersection nodes of municipal underground utility tunnels, belonging to the field of municipal engineering technology. It includes a base, a liquid storage tank fixedly connected to the right side of the upper surface of the base, a support block fixedly connected to the left side of the upper surface of the base, a pump fixedly connected to the upper surface of the liquid storage tank, a pumping pipe fixedly connected to the input end of the pump, and the output end of the pumping pipe extending into the interior of the liquid storage tank. A pipe clamping cavity is fixedly connected to the upper surface of the support block. This construction system achieves efficient utilization of waterproofing and sealing materials through multiple designs, significantly reducing construction costs and material waste. On one hand, the liquid storage tank is equipped with an integrated stirring and wall-mounting cleaning structure. A motor drives a rotating disk to move a rotating column and rod, causing the sliding vertical column to move up and down along the extension cavity. When the sliding block slides along the curved groove, it drives the stirring blades to rotate, continuously stirring the material.

A production method of TMCP hydrogen-doped hydrogen-delivering pipeline steel, characterized in that the chemical composition of the steel contains C=0.03%-0.05%, Si=0.12%-0.30%, Mn=0.95%-1.05%, P≤0.004%, S≤0.0010%, Alt=0.020%-0.045%, Nb=0.040%-0.050%, Ti=0.010%-0.020%, and the balance is Fe and inevitable impurities. The steel plate has good hydrogen environment compatibility performance in addition to the mechanical properties of conventional pipeline steel. In A solution environment, HIC: CSR≤2%, CLR≤15%, CTR≤5%; the tensile strength and the reduction of area of the smooth sample in a 6.3 MPa pure hydrogen environment are greater than 80% and 95% in the air environment; at the same time, in the 6.3 MPa pure hydrogen environment, the K1C of the step compact tension sample is ≥100 MPa·m1 / 2, and the fatigue life is ≥100,000 times.

The application discloses a kind of high-strength corrugated pipes for drainage and manufacturing method thereof, belong to the technical field of corrugated pipe.The corrugated pipe includes the following weight parts components: 50-75 parts of PVC, 8-15 parts of HPVC, 5-15 parts of HNBR, 5-10 parts of modified filler, 4-8 parts of toughening agent, 1-2 parts of antioxidant, 1-3 parts of heat stabilizer, 0.4-1.1 parts of lubricant.By the raw materials of above-mentioned formula are mixed at high speed, using one-step continuous extrusion molding process, under the temperature parameter and blow pressure of accurate control, plasticizing, extruding, blow setting, traction cutting preparation obtains high-strength corrugated pipe for drainage.Compared with prior art, the high-strength corrugated pipe for drainage of the application solves the problem of poor filler dispersibility and weak interface bonding through multi-level synergistic effect.Testing shows that the corrugated pipe of the application has high ring stiffness and excellent low-temperature impact resistance, long service life, and is especially suitable for high-standard drainage engineering.

The application provides a 700MPa high-strength hot-rolled steel, a preparation method and application, the chemical components of the 700MPa high-strength hot-rolled steel include the following in mass fraction: C 0.06~0.09%, Si 0.05~0.15%, Mn 1.8~2.0%, Ti 0.11~0.145%, Cr 0.1~0.2%, Nb 0.04~0.05%, V 0.01~0.02%, P≤0.015%, S≤0.002%, N≤0.005% and the balance of Fe and inevitable impurity elements; the thickness of the 700MPa high-strength hot-rolled steel is 8.99~13.99mm. The preparation method is simple, convenient to operate, does not need to add special equipment, can be adapted to the existing hot-rolling production line, is convenient for large-scale production and has strong industrial application value.

The application discloses a composite gel particle plugging agent for plugging steam channeling and preparation and application thereof, and belongs to the technical field of oil field chemistry. The plugging agent has a triple composite structure of "rigid inorganic core-elastic gel shell-oil-soluble surface layer", the elastic gel shell penetrates and is chemically anchored in the porous structure of the core through a crosslinked network, and an organic-inorganic interpenetrating interface is formed. The surface modifier is an oil-soluble polymer. The plugging agent realizes the synergy of rigid support, elastic plugging and flexible selectivity, so that the volume retention rate of the plugging agent is greater than or equal to 85%, the single-particle compressive strength is greater than or equal to 1.5 MPa, and the ratio (selectivity index) of the plugging rate of the water phase channel to the damage rate of the oil phase channel is greater than or equal to 7.0 after the plugging agent is aged for 7 days in a steam environment at 300 DEG C and a salinity of 20*10 4 mg / L, and the technical problems of easy failure, low plugging strength and lack of flexible selectivity of existing plugging agents under extreme high temperature and high salinity are effectively solved.

This invention discloses a method for recycling titanium alloy recycled materials based on hot isostatic pressing (HIP), belonging to the field of titanium metallurgy. The method includes the following steps: First, titanium alloy recycled materials with different oxygen contents are accurately calculated and mixed to obtain a homogeneous mixture. Second, a titanium alloy sheath of the same material as the product is manufactured using 3D printing technology. The pre-mixed powder is then filled into the sheath and compacted. Finally, after vacuuming and sealing, HIP sintering is performed to directly obtain a near-net-shape dense blank under high temperature and pressure. This method optimizes the process flow by combining the full densification capability of 3D-printed sheaths with HIP technology, eliminating the remelting, sheath removal, and numerous machining steps required in traditional recycling processes. It directly produces near-net-shape products from recycled materials, significantly reducing energy consumption, labor time, and raw material loss, achieving a high-value green recycling of titanium alloys.

The utility model relates to the technical field of acid liquor injection devices, and discloses a multi-channel parallel operation efficient acid liquor injection device which comprises a base, and an injection mechanism and a stirring mechanism are arranged on the top surface of the base. The first rotating rod and the second rotating rod in the box body are mounted through the first supporting frame and the first frame body which are mounted through bolts, so that acid liquid injection is facilitated, the acid liquid can be effectively replaced according to the same stratum characteristics or acidification requirements through the quick dismounting device, and then fault parts are quickly isolated; a first motor is arranged to drive a first rotating rod and a second rotating rod to rotate, so that a plurality of first stirring blades and second stirring blades in the first rotating rod and the second rotating rod are driven to rotate, acid liquor raw materials in the box body are mixed, meanwhile, a first brush plate and a first filter plate are arranged for filtering and cleaning, and sufficient mixing is achieved; uniform and stable acid liquid performance is ensured, and injection pipelines or stratum pores are prevented from being blocked.