352 results about "Black films" patented technology

An object of the present invention is to provide a face-down type jet plating device in which deterioration in plating quality due to minute solid foreign matters derived from a black film etc. is prevented without impairing operativity. The plating device is designed such that a partition (7) is provided between a semiconductor wafer (1) and an anode (5) so that the anode (5) and the semiconductor wafer (7) are separated from each other and a plating tank (100) is divided into a substrate-to-be-plated chamber and an anode chamber.

A vehicle inside mirror device for displaying an image, which can obtain an enhanced mirror function of a prismatic glass caused by a black film provided at a rear side of a prismatic glass and has a relatively simple structure made by forming directly a transflective layer on a rear surface of a prismatic glass without using a substrate. The vehicle inside mirror device comprises a housing mounted in a passenger compartment of a vehicle; a prismatic glass provided on a front side of the housing and having a transparent transflective layer formed on a rear surface thereof; a black film provided at a rear side of the prismatic glass and having an opening formed on one side thereof; a liquid crystal display (LCD) module provided at a rear side of the opening of the black film; and a control circuit unit installed at a rear side of the LCD module.

A vehicle inside mirror device for displaying an image, which can obtain an enhanced mirror function of a prismatic glass caused by a black film provided at a rear side of a prismatic glass and has a relatively simple structure made by forming directly a transflective layer on a rear surface of a prismatic glass without using a substrate. The vehicle inside mirror device comprises a housing mounted in a passenger compartment of a vehicle; a prismatic glass provided on a front side of the housing and having a transparent transflective layer formed on a rear surface thereof; a black film provided at a rear side of the prismatic glass and having an opening formed on one side thereof; a liquid crystal display (LCD) module provided at a rear side of the opening of the black film; and a control circuit unit installed at a rear side of the LCD module.

A reflective star sensor light shield comprises three thin-wall cone barrels, wherein the three thin-wall cone barrels are successively connected. Inner walls of two cone barrels which are far from a lens are smooth clean surfaces and are sprayed with black paint or black films with high reflectivity and a low scattering rate. The inner wall of the cone barrel which is close to the lens is a baffle vane or a barrel type structure of eliminating veiling glare threads and is sprayed with black paint or black films with low reflectivity and the low scattering rate. The whole light shield can possess a optimal length through setting an algebraic relation of cone angles of each cone barrel. The reflective star sensor light shield of the invention has a short length and light weight, and is convenient for processing and manufacturing. The reflective star sensor light shield possesses strong inhibition capability for stray light, such as sunlight and ground gas light, which is a strong light source out of field of view. The invention can be used for the star sensor to shade light and be used for optical remote sensors to explore deep space, such as a star camera and the like.

A plating apparatus according to the present invention is provided with a plating tank 100 in which an anode electrode 5 is provided, the plating apparatus performing the plating by (i) streaming a plating solution and an electrolytic liquid into the plating tank 100, (ii) emitting a jet of the plating solution to the plating-target face W of the semiconductor wafer 1 from the underneath of the semiconductor wafer 1, and (iii) streaming the electrolytic liquid to the anode electrode 5 while electrically conducting between the semiconductor wafer 1 and the anode electrode 5, the plating tank including a partition in between the semiconductor wafer 1 and the anode electrode 5, and the partition (i) separating the semiconductor wafer 1 and the anode electrode 5 and (ii) dividing the plating tank 100 into a plating-target substrate room and an anode electrode room. Thus, in a face-down type fountain plating apparatus, the plating quality would not be degraded by micro foreign solid particles originated from, for example, a black film while maintaining the operability of the apparatus.

The invention relates to a preparation method for improving the gel hardness of fish balls, which is characterized by comprising the following steps of: separating fish meat by using a meat separator, removing fish bones and black films, putting fish fillets into 5 to 8 percent salt solution and soaking for 20 to 40 minutes with continuous stirring; putting the fish meat from which fishy smell is removed into clear water in an amount which is 4 to 6 times that of fish meat, slowly stirring for 8 to 10 minutes, repeatedly washing by using circulating water, dissolving 2 to 4 percent of salt in water, adding into minced fillets, milling for 2 to 4 minutes, adding 0.1 to 0.6 percent of transglutaminase (TGase), milling for 6 to 10 minutes, adding seasonings into the minced fillets, and milling for 1 to 4 minutes; adding 3 to 6 percent of wheat gluten into the minced fillets, and milling for 2 to 5 minutes; putting the minced fillets into a 0 DEG C refrigerator for 1 to 3 hours, forming by using a ball making machine, and ensuring that the weight of each ball is 7 to 15g; and heating the fish balls to the temperature of between 37 and 45 DEG C, keeping for 15 to 25 minutes, putting into a 70 to 85 DEG C water bath for 20 to 30 minutes, fishing out, quickly cooling, quickly freezing, and packaging. The fish balls prepared by the method have smooth and mellow appearance, smooth mouthfeel, high elasticity and rich nutrition.

The invention discloses a method for preparing a graphene-polyimide conductive black film. The method comprises the following steps: performing secondary expansion on expansible graphite, preparing graphene and black packing dispersion, so as to obtain graphene-polyimide black solution and preparing the graphene-polyimide conductive black film. The method is simple, easy to operate and low in cost. The graphene-polyimide conductive black film obtained by the method is flat in surface, high in absorbance, high in heat resistance and excellent in mechanical strength, can be prepared into black cover films, black antistatic films and black flame-resistant films by using the method and is widely applied to the fields of LED, flexible printed circuit boards, military flexible plastic packaging films, electromagnetic wave shielding and heat-resistant materials of aerospace crafts and the like.

The invention relates to an iron rust conversion agent for removing and preventing rust on the surface of steel. The iron rust conversion agent can be coated on a rusty surface of the steel, the iron rust is conversed into a layer of a protective film, the complicated components of the rust layer are converted into stable products, and the stable products show no rust in the relatively long time in the atmosphere, therefore, the rusty surface of the steel can be directly coated and constructed without removing the rust. A synthetic resin emulsion is used as a main film-forming agent, pyrogallic acid and tannic acid are used as main conversion agents, citric acid is used as an auxiliary conversion agent, and a film-forming auxiliary agent is adopted to realize the curing film-forming at room temperature, thus the compactness and water resistance of the film are improved; and moreover, isopropyl alcohol is used as a solvent and penetrating agent, so as to stabilize the rusty layer. The iron rust conversion agent is sprayed to the rusty surface of the steel, thus a compact and uniform black film is formed on the surface of the steel in short time. In addition, the iron rust conversion agent has advantages of simple preparation process, low cost, stable performance, economy and practicality, safety and environmental friendliness, not containing of toxic and harmful ingredients such as formaldehyde, benzene and nitrite, and no simulation on operating personnel and the like.

The invention relates to the field of crop planting, and particularly to a method for planting potatoes, which comprises the following steps: preparing land, fertilizing, and ditching; putting the potato seedlings into ditches, ridging, covering soil, covering parts on ridges, where the potato seedlings are planted, with colorless and transparent film, and covering two sides of the colorless and transparent film with black film; conducting field management, and harvesting potatoes. The method adopts the colorless and transparent film and the black film, which are in a matched manner, to plant the potatoes, the colorless and transparent film has good light transmittance and increases temperature quickly at the early stage, so the potatoes can root early; the black film has low visible light transmittance and can restrain weeds from growing, and the weeding rate can reach about 90 percent; during the middle and later periods of growth, the root systems enter below the black film, high temperature below the film, caused by strong sunlight, is prevented, and the premature senility of the root systems is avoided; the method can create a good environment for potato tuber growth in the period of tuberization, and has a ground temperature adjusting function that other film does not have; not only is the labor intensity of weeding reduced, but also the yield is increased by a large margin.

The invention relates to a capacitive touch screen, which comprises a substrate, and a film layer arranged on side of the substrate membrane surface. A black film is arranged around an atmospheric surface for shielding metal routings around the substrate in the film layer; a protective layer is arranged on the black film; the metal routings in the shielding film are arranged through a the atmospheric surface, so as to avoid a transparent cover plate used on one side of the atmospheric surface of the substrate, improve the transmittance of a touch-control screen panel, reduce the reflectivity of the film layer, enable the whole background of a touch-control screen to be even, improve the visual effect, enable the contrast of the touch-control screen to be improved, and reduce the working efficiency of the back light; the protective layer is arranged on the black film, so as to enable the atmospheric surface to be smooth, and protect the touch-control screen from being scratched when a finger touches the touch-control screen.

The invention discloses a color filter and a production method thereof as well as a liquid crystal panel. The color filter comprises a substrate and a black matrix, a gap grain and a color filtering layer which are formed on the substrate, wherein the black matrix and the gap grain are of an integrated structure; the thickness of the black matrix is more than that of the color filtering layer; and the color filtering layer is used for adding color ink into the black matrix on the substrate according to an ink jet printing method and curing the color ink. In the color filter provided by the invention, the black matrix and the gap grain are of the integrated structure by exposing and developing a black film on the substrate, thereby simplifying the production method of the color filter. In the color filter, the color filtering layer is produced according to the ink jet printing method, so that the height of the black matrix is unlimited during the production process for forming the color filtering layer, the existing material can be used for producing the black matrix and the gap grain, and the production yield of the color filter is increased.

Relating to a processing method for canned mackerel, the invention specifically provides a processing method for reducing histamine in canned mackerel. The processing method for reducing histamine in canned mackerel is characterized by simple and reasonable process, strong operability, and easy realization of large scale production. The method includes: using clear water to perform spray thawing on frozen mackerel; removing the head, the tail and the viscera from the thawed fish, cleaning bloodstains, black films and dirt in gills inside the abdominal cavity by clear water; cutting the fish body into fish blocks, washing them, and removing the remaining bloodstains; putting the fish blocks into salt sugar water to undergo soaking; canning the soaked fish blocks, then performing boiling in boiling water; cooling the boiled can to room temperature and draining water in the can; adding boiled salt sugar water into the cooled can, and keeping the headspace height at 0.8-1.0cm; adding a can cover, then conducting heat exhaust, and carrying out sealing while hot; employing high temperature and high pressure steam to conduct sterilization; performing cooling after sterilization; and wiping the moisture on the can surface, and carrying out casing and warehousing.

The invention discloses a method for preparing a Bi / BiVO4 composite photoanode material by photodeposition. The method comprises the following steps: soaking a BiVO4 electrode in an ethylene glycol / water mixed solution of Bi(NO3)3 5H2O, and illuminating to uniformly generate a layer of an ash black film on the surface of the BiVO4 electrode; and washing with ethyl alcohol to obtain a Bi / BiVO4 composite photoanode. According to the method, metal Bi particles are successfully loaded on a multihole BiVO4 thin film in a simple photo-reduction process; furthermore, introduction of the metal Bi particles enlarges an absorption range of bismuth vanadate to visible light; meanwhile, electrons in the metal Bi particles are transferred onto a BiVO4 conduction band to increase the concentration of current carriers; and a hole in the BiVO4 surface in a pure Na2SO4 solution oxidizes part of the metal Bi nano particles, so that separation of electron-hole pairs is effectively promoted, and the photoelectric chemical decomposition performance of water is improved.

The invention provides a room temperature blackening agent suitable for an iron casting and a method for preparing the room temperature blackening agent suitable for the iron casting. Each liter of the blackening agent is prepared from the following raw materials: 1-3 grams of sodium molybdate, 2-6 grams of copper sulfate, 1-3 grams of nickel sulfate, 1-3 grams of complexing agent, 4-8 grams of coalescing agent, 0.3-1.5 grams of additive, 0.5-3 grams of polyethylene glycol, 0.5-3 grams of oleate and the balance of water, wherein the pH is between 2.0 and 3.0. The room temperature blackening agent suitable for the iron casting provided by the invention is the room temperature blackening agent which is environment-friendly, is toxicity-free, has strong adaptability and an excellent rust-proof function and does not contain harmful substances such as strong acid, strong alkali, phosphorus, selenium, nitrite and the like; and the room temperature blackening agent can form a layer of black film which is black, bright and uniform and has high firmness and strong corrosion resistance on workpiece surfaces.

The present invention provides an iron group metal material after black surface treatment, which forms a black film that has excellent corrosion resistance and sliding performance and does not contain chromium. The surface of the iron group metal material is provided with the following components: a ferroferric oxide layer which is formed through chemical conversion treatment; a chemical conversion treatment layer which is formed on the ferroferric oxide layer and comprises at least one component selected from the following matters: phosphate of at least one element selected from zinc, tin, iron, manganese and calcium; oxide of at least one element selected from titanium, zirconium, hafnium, indium, tin, bismuth, vanadium, nickel, cerium, molybdenum and wolfram; fluoride of at least one element selected from titanium, zirconium, hafnium, indium, tin, bismuth, vanadium, nickel, cerium, molybdenum and wolfram; and a solid lubrication layer which is formed on the chemical conversion treatment layer.

The invention belongs to the field of liquid crystal display and particularly discloses a liquid crystal composite film with a writing display function and a preparation method thereof. The liquid crystal composite film with the writing display function comprises a PET transparent film, a PVA insulating orientation layer, a liquid crystal / polymer / interval microsphere composite layer and a PET black film sequentially from top to bottom. The lower surface of the PET transparent film is coated with an ITO layer, and the upper surface of the PET black film is coated with an ITO layer. The liquid crystal composite film with the writing display function and the preparation method thereof have advantages that due to addition of the PVA insulating orientation layer, short circuit risks of two conductive layers are avoided, and accordingly the rate of finished products is sharply increased, service lives of the products are greatly prolonged, production cost is reduced, and the driving voltage of the liquid crystal film is lowered to increase key technical indexes such as brightness and contrast ratio of the film.

The invention discloses technology for aligning a circuit board by a PIN nail, and belongs to the field of manufacture of circuit boards. The technology comprises the following steps: (A) drawing patterns to be transferred on a film on which a processing line and a molding line are set; (B) forming a PIN nail positioning hole at the corner position of the processing line, wherein one side has 1 to 3 holes more than the other sides; (C) arranging the PIN nail in the PIN nail positioning hole; (D) forming a film window at the edge position of 2 to 5mm of the PIN nail hole and adhering a gummed paper, and sealing the sides of the film; and (E) performing aligned production of the circuit board according to the PIN nail. By adopting the technology, the circuit boards can be directly produced by using a black film without copying the black film into a yellow film and substantial cost can be saved. Due to the adoption of the technology for aligning the circuit board by the PIN nail, the efficiency can be improved to 80 to 90 pnl per hour. Due to the adoption of the PIN nail, the operating difficulty for aligning personnel is reduced greatly.

The invention discloses an automatic fish washing machine. The automatic fish washing machine comprises a rack, and further comprises a first fish clamping belt set, a second fish clamping belt set, a fish pressing mechanism, a fish belly opening device, a viscera and black film removing and washing device and a fish body sliding groove. The first fish clamping belt set and the second fish clamping belt set which are consistent in conveying direction are installed on the rack side by side, and a conveying channel is formed between the first fish clamping belt set and the second fish clamping belt set. The fish body sliding groove is fixedly connected to the lower edge of the conveying channel and extends to the exterior of a starting end of the conveying channel to form a fish inlet. The fish pressing mechanism is fixedly connected to the upper portion of the conveying channel. The fish belly opening device is fixedly connected to the fish body sliding groove, and the viscera and black film removing and washing device is fixedly connected to the lower portion of the fish belly opening device. The automatic fish washing machine can quickly open the fish belly, remove fish viscera and the black film on fish and carry out washing thoroughly; the automatic fish washing machine is simple in structure principle, low in cost, easy to operate, good in stability, and the treatment effect is more ideal especially for different sizes of daces.

The invention provides technology for electrolyzing copper from brown oxide waste liquid, which includes steps: A collecting brown oxide waste liquid; B adding polyvinyl alcohol and ceric ammonium sulfate into the brown oxide waste liquid, stirring and obtaining stirred solution; C discharging stirred solution to an electro clean; and D electrolyzing the copper from the solution in the electro clean. By means of the technology for electrolyzing copper from the brown oxide waste liquid enables the copper to be electrolyzed from the waste liquid, a black film matter can not be generated on a cathode, the electrolyzed copper is attractive and flat and has certain market value, and chemical oxygen demand (COD) value in the waste liquid is greatly reduced.

The invention discloses a saline-alkali tolerant high polymer modified asphalt polyester reinforcement waterproof coiled material, which comprises a layer of high-strength long fiber polyester reinforcement (PY) with the thickness ranging from 1.2mm to 1.4mm. Special super-viscous SBS (styrene-butadiene-styrene block copolymer) and chemical saline-alkali tolerant accessories are covered on two surfaces of the polyester reinforcement to modify rubber asphalt, and the polyester reinforcement, the modified rubber asphalt and a PE (polyethylene) black film or fine sand materials are jointly used for preparing the saline-alkali tolerant high polymer modified asphalt polyester reinforcement waterproof coiled material by the aid of special process. The saline-alkali tolerant high polymer modified asphalt polyester reinforcement waterproof coiled material realizes excellent chlorine ion permeation performance and saline-alkali tolerance when used in building waterproofing engineering in coastal areas and high-saline and high-alkali areas, and can effectively prevent a building structural main body from being eroded by corrosive media.

A liquid crystal display device with a black film for reducing bright lines, light leakage and line cloak. The liquid crystal display device has a liquid crystal panel divided into a display portion and a non-display portion. Black film is formed on the under surface of the non-display portion in the liquid crystal panel. By utilization of black film for reducing bright lines, light leakage and line cloak, the picture quality of the liquid crystal display device is greatly enhanced and the liquid crystal display device is lighter and slimmer.

The invention discloses a production method of a temperature-resistant pressure-resistant capacitive touch screen panel. The production method includes the steps: firstly, cleaning and drying a glass substrate; secondly, forming a removable local shade layer; thirdly, vacuum-plating a black titanium carbide film or black titanium carbonitride film; fourthly, vacuum-plating a silica film on the surface of the titanium carbide film or titanium carbonitride film; fifthly, removing the local shade layer and the portions of the films thereon to obtain the glass substrate with a metal film wire black-film masking frame and a transparent visual area; sixthly, on the back of the glass substrate, forming a transparent ITO (indium tin oxide) conducting film on the transparent visual area, forming a metal film wire connected with the transparent ITO conducting film on the black film masking frame, and forming an OC (over coat) protective layer on the metal film wire; and seventhly, forming the touch screen panel. The temperature-resistant pressure-resistant capacitive touch screen panel is capable of effectively resisting high temperature and high pressure, bonding yield of the touch screen panel and a flexible circuit board is increased, and production cost of OGS (one glass solution) capacitive touch screen modules is reduced greatly.

The invention relates to a cultivation method for hotbed chives, belonging to the vegetable planting field. The cultivation method comprises the following processes of A, bedding and planting; B, managing water and fertilizers; C, cultivating hotbed chives, D, managing growth period and E, harvesting. Leek seedlings are planted in a leek plot; after a certain time of management of water and fertilizers, supports are arranged on the surface of the plot and a perforated black and white film is covered on the surface of the plot when the leeks grow to a certain height; the leeks are gradually excavated out from the holes; along the growth of the leeks, the length that the perforated black and white film covers the leek cauloid is increased through overstating supports, so the leek cauloid isconsistently in the condition without illumination and the cauloid is yellowed. When the leeks grow to a certain extent, green leaves at the upper part of the leeks are cut off; and then a common light tight black film is covered on the leeks; and the cut green leek leaves or straws are paved on the common light tight black film. The cultivation method for the hotbed chives provided in the invention saves heavy hilling labor; the leeks grow in the film holes, so the film has better supporting effect, the leeks have better permeability, and the disease resistance of the leeks is improved.

The invention provides cleaning liquor for removing residual magnesium alloys in a die. The cleaning liquor comprises the following components in percentage by weight: 60-240g of hydrochloric acid, 1-10g of ammonium citrate, 0.5-2g of EDTA (Ethylene Diamine Tetraacetic Acid), 5-55g of a corrosion inhibitor and 750-950g of water. Meanwhile, the invention provides a treatment method for cleaning the residual magnesium alloys by using the cleaning liquor according to the following four steps: pretreatment, cleaning, removing black films and washing by hot water. The cleaning liquor and treatment method have the benefits that damages cannot caused to the die and no influence is made on dimensional precision of the die, and configuration and operating method are simple and feasible, so that the surface roughness Ra1.0-1.5 of the die is effectively guaranteed. Referring to standards of GB8923-1988 Rusting Grade on Surface of Steel Products and Derusting Grade before Coating, according to the method, the surface rusting condition of the die is improved from grade D to grade A, and the grade Sa 3 of compressed-air blast cleaning is realized, so that one grade is raised relative to that of existing die cleaning liquor in the existing market.

The present invention relates to vacuum insulating plate (VIP), and is especially production process of VIP with high temperature getter. The production process includes the following steps: setting evaporating getter inside glass tube; forming vacuum sealing port in one end of the glass tube and vacuumizing in a vacuumizing bench, heating to activate the getter after the pressure is lowered to below 10<-3> Pa and evaporating the getter to form black film; sealing the glass tube with activated getter; setting the glass tube with activated getter into VIP, vacuumizing in a vacuum sealing machine and sealing the VIP after the vacuum reach 1 Pa; pressurizing the sealed VIP to break the glass tube for absorbing air. The process is also suitable for non-evaporating getter, and the present invention has greatly lowered cost.

The invention discloses a manufacturing method for blackening mobile phone shell. The manufacturing method comprises the procedures as follows: a stainless punch forming shell is adopted; the shell is polished or wiredrawn; the shell is placed on an ultrasonic clean line to be cleaned; the shell is placed in a vacuum furnace; high voltage source is used for argon-ion bombardment for the shell; an Ion plating method is used for depositing a pure metal layer on the surface of the shell; a magnetron sputtering method is used for depositing a middle transition layer on the bottom layer of the pure metal; the magnetron sputtering method is used for coating a hard black film on the middle transition layer; the shell is passivated and cooled; and a static protective film is stuck on the shell for package. The manufacturing method has the characteristics of green environmental protection and energy saving. The tone range of a black nano film is that L is equal to 35 to 39, a is equal to -0.3 or 0.5 and b is equal to 0 to 3. The manufacturing method also has strong bonding capacity which can be over 8H under the loading below 1000g, so the wear-resisting property and the service life of the stainless cell phone casing are greatly improved.

The invention relates to the technical field of display, and discloses a display panel and a display device. The display panel comprises a first area formed by a front surface pixel array and a secondarea formed by a back surface pixel array, so that double-sided display can be realized; the pixel of the first area comprises a first light-shielding layer, a first thin-film transistor and a top-emitting OLED unit; the first light-shielding layer is arranged, and material of a first anode and a first cathode can be selected, so that emitting and light leakage of the light from the top-emittingOLED unit on the back surface of the display panel can be prevented; the pixel of the second area comprises a second thin-film transistor, a bottom-emitting OLED unit and a second light-shielding layer; the second light-shielding layer is made of a material with a light shielding effect, such as a black film MMCBX or a black matrix BM, and is made on a metal electrode, and the effect of the composite functional electrode thin film can be achieved, so that the light-emitting effect of the back-side display pixels is guaranteed, and light leakage is prevented. The display panel can be a flexiblefolding panel, so that the light and thin double-sided display effect is easy to realize.

The invention discloses a planting method for an early chrysanthemum. The planting method comprises the following steps of land preparation and soil preparation, seedling cultivation, timely transplanting, field management, harvesting and processing. The planting method for the early chrysanthemum is easy to learn and popularize, beneficial to high yield and suitable for large-scale production. Through using an organic fertilizer with a unique formula, soil permeability, water retention, fertility conservation, and soil and plant diseases and insect pests prevention can be improved, thereby fundamentally solving the problem of soil compaction. Through disinfection and pre-culture, cuttings obtain a good disease resistance and a high survival rate. After being transplanted, the early chrysanthemum is covered by a black film so that herbicides can be eliminated, and management is simplified. An insecticidal yellow sticky board combines with a Chinese herbal medicine spray insecticide, thereby meeting the requirements of environmental protection and energy conservation, greatly reducing the plant diseases and insect pests of the early chrysanthemum, and improving the quality of the early chrysanthemum. Spraying nutrient solution can provide comprehensive nutrition, and enable the early chrysanthemum to be not easy to die and obtain vigorous and fast growth, moreover, the nutrient solution also has zinc and selenium elements with a health care effect.

Provided is a phosphorization technology of an alloy steel material. The alloy steel material after phosphorization is obtained through washing, oil removing and grease removing, washing, surface adjustment, phosphorization, washing and drying. A phosphating solution comprises 70-90g / L of Zn (H2PO4), 7g / L of Ni (NO3)2, 80-100g / L of Zn (NO3)2, and 20-30g / L of Mn (NO3)2. Free acid of the phosphating solution is adjusted to be 6-10, the total acidity of the phosphating solution is 55-70, and the temperature of the phosphating solution is 75-80 DEG C. According to the phosphating solution, acid pickling is not needed in the phosphorization process, and the environment can be protected; the influence on a phosphorization reaction in the phosphorization process of Cr and Mn can be eliminated. According to the phosphorization technology, in surface conditioning, specific reagents are added, the steel material surface can be effectively activated, a black film is formed, and therefore the phosphorization process is stable.

The iron and steel surface sensitizing and blackening agent includes sensitizing agent and normal temperature blackening liquid. Its formula is as follows: the sensitizing agent consists of CuSO4.5H2O, NiSO4.7H2O, sodium citrate, tartaric acid, amido sulfonic acid and water, and has pH value of 2-4; and the normal temperature blackening liquid consists of sodium sulfide, ethanol and water, and has pH value of 8-10. The blackening process includes the main steps of: pre-treatment of iron and steel parts, soaking the pre-treated iron and steel parts in the sensitizing agent liquid for 2-6 to sensitize, and soaking the sensitized and washed iron and steel parts in the normal temperature blackening liquid for 3-5 min to form black film.