33results about How to "Anti-corrosion and anti-rust" patented technology

The invention discloses a steel structure connecting device of a wood-stone composite bridge. The steel structure connecting device of the wood-stone composite bridge comprises a cover nut (1), a lower semi-circular arc-shaped steel plate strip (2), a baffle plate (3), an upper semi-circular arc-shaped steel plate strip (4), a bolt hole (5), first end plates (61) and second end plates (62). The cover nut (1) is sleeved on a bridge pier, the lower semi-semicircular arc-shaped steel plate strip (2) is welded to the center of the top portion of the cover nut (1), the upper semi-circular arc-shaped steel plate strip (4) is arranged above the lower semi-circular arc-shaped steel plate strip (2), the first end plates (61) are arranged on two end portions of the upper semi-circular arc-shaped steel plate strip (4) along the radial direction far away from the center of a circle formed by the upper semi-circular arc-shaped steel plate strip (4) and the lower semi-circular arc-shaped steel plate strip (2), and second end plates (62) are arranged on two end portions of the lower semi-circular arc-shaped steel plate strip (2) along the radial direction far away from the center of the circle formed by the upper semi-circular arc-shaped steel plate strip (4) and the lower semi-circular arc-shaped steel plate strip (2). By means of the steel structure connecting device of the wood-stone composite bridge, the bridge pier built by laying stones and a longitudinal round-log beam are fixedly connected together, and the deformation requirement of the longitudinal round-log beam can be met.

The invention relates to a weather-resistant inorganic exterior wall coating based on graphene and mullite and a preparation method thereof, and belongs to the field of inorganic wall coatings based on graphene. ~15%, graphene 1~20%, vitrified microbeads 2~10%, sepiolite 3~10%, albite 6~15%, light calcium carbonate 5~18%, bauxite 5~ 10%, nano-titanium dioxide 2-8%, nano-silica sol 10-15%, additives 20-30%, pure acrylic emulsion 3-6%. The coating has strong bonding strength, simple construction, and the coating is resistant to washing. At the same time, under high temperature conditions, the coating does not bubble, crack, or fall off, and has the functions of waterproof, fireproof, salt resistance, alkali resistance, heat insulation, anti-corrosion, anti-rust, and anti-aging.

The invention relates to a long-service-life anti-clamp and bite lubricating grease composition and a preparation method thereof. The composition comprises the following components by weight percent: 82.9%-97.5% of compound calcium sulfonate grease, 0.3%-1.0% of an antioxidant and a metal deactivator, 0.6%-4.8% of an anti-rusting agent, 0.3%-3.2% of a solid lubricant, 1.0%-4.5% of a solid filling agent and 0.3%-3.6% of a tackifier. According to the lubricating grease composition, the rusting speed of a pin shaft of a tower crane can be remarkably decreased, the problem that the pin shaft of a tower crane used for large-sized or high-rise building projects with a construction period over 2 years cannot be dismounted due to clamping, biting and rusting under a construction environment can be effectively avoided, and the smooth mounting and dismounting of the pin shaft of a standard knot of the crane tower are realized.

The invention provides an ultra-low emission production method of refined vanadium, which belongs to the technical field of vanadium product processing. The ultra-low emission production method of refined vanadium includes the following steps: grinding and dispersing the ammonium metavanadate filter cake into powder or small particle size, and sintering continuously in a sintering kiln at 100-125°C; On the premise of bag dust removal, the filter residue of bag dust removal is returned to the sintering kiln; the waste gas after bag dust removal is cooled once and then enters a cooling room for secondary cooling; the waste gas after twice cooling is sprayed three times to complete the waste gas Separation of ammonia gas; ammonia-containing wastewater used to absorb ammonia gas in waste gas is injected into neutralized water containing sulfuric acid for ammonia removal. The present invention has the advantages of being able to realize ultra-low emission and the like.

The invention relates to a grease composition for assembling standard sections of a tower crane and a preparation method of the grease composition. The grease composition comprises the following components in percentage by weight: 78.8%-94.8% of common lithium-based grease, 0.2%-0.8% of antioxidant, 0.8%-3.2% of graphite powder, 1.0%-4.5% of light calcium carbonate, 0.5%-3.0% of sorbitan monooleate, 0.4%-2.2% of phenolic resin, 2.0%-6.0% of sulfonate and 0.3%-1.5% of polyisobutene. The special grease composition for assembling the standard sections of the tower crane is obtained by adding additives such as the antioxidant, an antifriction agent, an anti-locking and anti-occluding agent, an anti-rust agent, a tackifying agent and the like into the common lithium-based grease taken as a carrier. According to the grease composition, the corrosion speed of shaft pins of the tower crane can be slowed, the shaft pins are prevented from being corroded and bonded with a shaft sleeve during building construction, and the pin shafts of the standard sections of the tower crane can be smoothly assembled and disassembled. The service cycle of the grease composition is within 1-2 years.

The invention discloses a seepage-resistant concrete and a preparation method thereof. Seepage erosion-resistant concrete includes the following components: cement, water, fly ash, silica fume, fine aggregate, coarse aggregate, admixture, preservative, and finely ground mineral powder; coarse aggregate includes a mass ratio of 1:(1.5 ‑1.8) of granite and basalt; admixtures include expanded fiber anti-crack waterproofing agent, air-entraining agent and water reducing agent with a mass ratio of 1: (0.3‑0.5): (0.5‑0.7); preservatives include the following parts by weight Raw materials: 2‑5 parts of isobutyltriethoxysilane, 1.2‑1.6 parts of oleic acid, 0.8‑1.6 parts of barium nitrate, 0.5‑1 part of 2BaO·SiO 2 and 3‑7 parts polyurethane resin. The seepage erosion-resistant concrete of the invention has the advantages of strong seawater seepage erosion resistance, corrosion resistance and good durability.