Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

278results about How to "Prevent corrosion" patented technology

Sludge composting method

The invention provides a sludge composting method, and relates to a sludge treatment method which comprises the steps of preferable accessory selection, CK21 fungus spraying inoculation, heavy metal passivation and powder granulation, and then three-dimensional composite biological organic fertilizer with organic, inorganic and microbial active constituents is obtained. Mushroom compost and pig manure are used as accessories which are easily obtained and degraded, the stacker fermentation time is short, only one time of fermentation is needed, the C/N ratio can be effectively adjusted, and the water content of the sludge is reduced; and the efficient beneficial bio-fungus community CK21 is adopted. The microbial concentration is high, the secretion ability of the enzyme is strong, organic matters can be quickly decomposed so as to prevent the corruption of the organic matters, no odor exists, sludge is used for CK21 inoculation, fermentation starts fast, and the effect is good; and the product is inoculated with the CK21 fungus secondarily so as to further balance and activate nutrients, and the microbial natural reproduction is utilized to realize the is called flower dipping absorbing of the plants to nutrients. The invention has the advantages of optimizing the composting conditions, shortening the composting time, reducing energy consumption of turning, and reducing the damage of the heavy metal on the ecological environment.
Owner:厦门市政环境科技股份有限公司

Low-melting-point and high-intensity aluminum alloy powder brazing filler metal and preparing method of low-melting-point and high-intensity aluminum alloy powder brazing filler metal

The invention discloses a high-intensity aluminum alloy powder brazing filler metal with the melting point being lower than 490 DEG C and a preparing method of the high-intensity aluminum alloy powder brazing filler metal with the melting point being lower than 490 DEG C, and belongs to the technical field of aluminum alloy brazing. The brazing filler metal comprises the following ingredients in parts by weight: 8.6 to 9.5 percent of Si, 16.5 to 17.5 percent of Cu, 8.5 to 9.5 percent of Ge, 4.5 to 5.0 percent of Ni, 4.0 to 5.0 percent of Zn, 0.70 to 0.75 percent of Sr, 0.35 to 0.40 percent of Bi, 0.40 to 0.45 percent of La, 0.40 to 0.55 percent of Ce, 0.10 to 0.20 percent of Yb and the balance Al. The brazing filler metal is prepared by adopting a flux rapid cooling-ball milling technology, the melting point is lower than 490 DEG C, the brazing temperature is 500 to 520 DEG C, and the brazing filler metal is applicable to aluminum alloy brazing with the solid phase line temperature higher than 500 DEG C, such as in-furnace brazing, vacuum brazing, induction brazing and flame brazing. The brazing filler metal is matched with QJ201 for brazing 3003 aluminum alloy, and the shearing intensity of a brazing joint is greater than 74MPa.
Owner:ZHEJIANG UNIV

Flip chip failure analysis method and preparation method of detection sample in electric property positioning

The invention discloses a flip chip failure analysis method and a preparation method of a detection sample in electric property positioning. The preparation method includes the steps that a flip chip to be detected is provided, wherein the flip chip comprises a packaging substrate and a bare chip prepared on the packaging substrate, the bare chip is covered with a plastic package body, a gold bump is connected between the bare chip and the packaging substrate, and a solder ball is welded to the bottom of the packaging substrate; the plastic package body outside the bare chip is ground till the crystal back of the bare chip is exposed; the back face of the bare chip is combined to a glass base plate, and a conducting strip is arranged on the glass base plate; the conducting strip on the glass base plate is electrically connected with the solder ball at the bottom of the packaging substrate through a packaging binding wire, and then the detection sample is obtained. According to the preparation method of the detection sample for flip chip failure analysis, the plastic package body on the back face of the bare chip is ground away, then the back face of the bare chip is combined on the glass base plate for failure analysis, the plastic package body does not need to be corroded, the packaging substrate and the bare chip do not need to be separated, and therefore the probability that the gold bump is corroded in the bare chip taking process is avoided.
Owner:INTEGRA TED SERVICE TECH SHANGHAI CO LTD

Water-saving flush toilet

InactiveUS20050155143A1Improve working lifePrevent corrosionWater closetsPipingWater use
This present invention relates to a water-saving flush toilet, comprising a bowl having a seat and a sewage discharge port, a siphon pipe is omitted at the rear of a sewage discharge pipe of the bowl. A discharge seal valve is arranged at the sewage discharge port, the discharge seal valve together with a valve cover are arranged at a valve seat. A water tap handle at the lower of the bowl is provided with a lever, a cord is connected between a handle of the valve cover and a joint of the bowl. Said cord is connected to hang a weight via another joint of the bowl. Another end of the lever is connected to another cord and also connected to said weight via said two joints. The upper of the bowl is arranged with a water channel and a sprinkler head, an open of said water channel connected to the water tap at the lower of the bowl via a connecting plastic tube, water pipes are arranged respectively at the upper and the lower of the bowl without any water tank. A water tank is omitted in this present invention and the cost is lowered as well as increasing the space of the cleaning room. The filling time of water tank in a traditional flush toilet is generally takes for 1 to 5 minutes, while the flushing time for the present water-saving flush toilet is only 2 seconds without the filling of water tank, which obviously saves time in flushing and save in water used.
Owner:CHU HUNGHING

Cold repairing material for asphalt road surfaces as well as preparation method and application of cold repairing material

The invention discloses a cold repairing material for asphalt road surfaces, as well as a preparation method and application of the cold repairing material. The cold repairing material is the mixture of a cold repairing binder and an aggregate material, wherein the mass ratio of the cold repairing binder to the aggregate material is 4-8:100. The cold repairing material for the asphalt road surfaces relies on the slow release technique of the cold repairing binder, so that the stability of asphalt can be improved, and the cold repairing material can be stored for a longer time; besides, the flexibility of the cold repairing material can be improved, so that the cold repairing material can be applicable under low-temperature weather conditions in winter. The cold repairing material is an oily material, has stable properties, is undissolved in water, and is insensitive to maneuvering impact, static electricity and the like. The components of the formula of the cold repairing material are environment-friendly materials, and do not generate any volatile substances polluting the environment during storage and use, so that the cold repairing material totally conforms to the environmental protection requirements.
Owner:江苏燕宁新材料科技发展有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products