The invention discloses a cleaning and antirust agent for secondary processing of casting parts and a preparation method thereof, and the cleaning and antirust agent has simple cleaning process, high operation efficiency, standard cleaning quality and capability to meet the antirust requirements of preparing process The agent consists of the following raw materials by weight: 2-5% of potassium hydroxide, 3-6% of sodium hydroxide, 15-20% of sodium carbonate, 10-20% of sodium metasilicate pentahydrate, 10-20% of sodium tripolyphosphate, 10-20% of sodium nitrite, 1-15% of osmotic agent, 2-6% of nonionic block polyether surfactant, 2-6% of special surfactant for dewaxing fluid, and 4-6% of antifoaming agent According to the preparation method of the agent, the above raw materials are gradually added into a mixer in order The adding of each material is associated with 10-15min of stirring, and when the raw materials are all added, at least 30min are needed to stir the materials continuously

Cleaning and antirust agent for secondary processing of casting parts and preparation method thereof

The invention discloses non-corroding ultrasonic cleaning equipment. A rust remover for ultrasonically cleaning a metal mould is used for rapidly and completely removing rusts on the surface of the metal mould, generating a dense and complete passivation film at the same time and avoiding a secondary oxidization. The rust remover is prepared from the following raw materials by mass percent: 8-30% of phosphoric acid, 6-25% of room-temperature steel surface conditioning agent, 1-4% of citric acid, 1-5% of tartaric acid, 1-4% of phytic acid, 1-8% of polyethylene glycol, 1-3% of penetrant JFC, 1-6% of ethylene glycol monobutyl ether and the balance of water. A preparation method of the rust remover comprises the following steps of: firstly, adding water with a calculated amount into a stainless steel reaction kettle, starting an agitator and controlling a rotary speed of the agitator to 40-60 r/min; then respectively taking the calculated amount of the phosphoric acid, the room-temperature steel surface conditioning agent, the citric acid, the tartaric acid, the phytic acid, the polyethylene glycol, the JFC and the ethylene glycol monobutyl ether and sequentially and slowly adding the materials into the reaction kettle; and adding the materials while agitating until the solution becomes a light-green transparent liquid.

Rust remover for ultrasonically cleaning metal mould and preparation method thereof

The invention discloses a comprehensive treatment agent which is used before spray coating of a galvanized steel sheet and can prevent a spray coating paint layer from falling off. The comprehensive treatment agent is prepared from the following raw materials in percentage by mass: 10 to 20 percent of phosphoric acid, 0.1 to 1.5 percent of citric acid, 2 to 6 percent of phytic acid, 1 to 4 percent of fluozirconic acid, 20 to 30 percent of room-temperature steel surface treatment agent, 3 to 8 percent of surfactant special for room-temperature spray degreasing, 1 to 4 percent of antifoaming agent and the balance of water. The preparation method comprises the following steps of: pouring a calculated amount of water into a stainless steel reaction kettle, starting a stirrer, controlling rotation speed to be 60 to 80 revolutions per minute, weighing the calculated amount of phosphoric acid, room-temperature steel surface treatment agent, phytic acid, fluozirconic acid, citric acid, surfactant spherical for room-temperature spray degreasing, and antifoaming agent respectively, adding into the reaction kettle sequentially, continuously stirring until a solution is light green transparent liquid.

Comprehensive treatment agent used before spray coating of galvanized steel sheet, and preparation method of comprehensive treatment agent

The invention relates to an aluminum alloy surface passivation liquid and a processing method thereof. The aluminum alloy surface passivation liquid comprises the following components: 0.1-10.0g/L potassium fluosilicate, 0.1-5.0g/L sodium fluoride, 0.1-5.0g/L potassium fluozirconate, 0.1-10.0g/L nitric acid and 0.1-10.0g/L phytic acid. The processing method comprises the step of contacting an aluminum alloy with the passivation liquid, wherein the passivation liquid is the aluminum alloy surface passivation liquid. Compared with the prior art, the passivation liquid has the advantages that the passivation liquid does not contact heavy metal ions especially chromium ions, the burden of the wastewater treatment is alleviated, the harms to the environment and the human health are reduced, the passivation treatment time is short, and the heating is omitted in a passivation process; the processing method is simple in step, and an obtained aluminum alloy product is strong in corrosion resistance.

Aluminum alloy surface passivation liquid and processing method thereof

The invention discloses a phosphorus-free chromium-free conversion film treating agent for a magnesium alloy workpiece, which can form a uniform and compact conversion film on surface of the magnesium alloy workpiece, and is stable in process, good in controllability, simple in operation and beneficial for environmental protection, and a preparation method. The treating agent comprises an agent A and an agent B, wherein the agent A is prepared from the following raw materials in percentage by weight: 1-8% of fluoro-zirconic acid, 0.1-1.5% of nitric acid, 1-6% of tannic acid, 1-8% of phytic acid, 1-6% of hydrofluoric acid, 0.1-2.5% of ammonium bicarbonate and the balance of purified water; and the agent B is prepared from the following raw materials in percentage by weight: 1-6% of polyethylene glycol, 1-5% of triethanolamine, 1-2% of defoaming agent and the balance of purified water.

Phosphorus-free chromium-free conversion film treating agent for magnesium alloy workpiece and preparation method

The invention relates to a film treating agent for treatment before electro-coating of die-cast aluminum alloy workpiece, containing the following raw materials in percentage by mass: 2-10% of fluorozirconate, 1-13% of nitric acid, 1-5% of citric acid, 1-8% of phytic acid, 0.5-3% of hydrofluoric acid, 0.3-1.2% of ammonium bromate, 3-8% of ammonium bicarbonate, and the balance of tap water. The preparation method comprises the steps as follows: adding metered tap water in a reaction kettle; turning on a stirrer at normal temperature and normal pressure with rotational speed 450-550 revolutions/min; and, adding ammonium bicarbonate, ammonium bromate, fluorozirconate, nitric acid, citric acid, phytic acid and hydrofluoric acid in sequence, completely dissolving and packing. The film treating agent for treatment before electro-coating of die-cast aluminum alloy workpiece produces no toxic or harmful substance during the treating process and has no influence on the operator and the environment; besides, the treatment can be carried out at normal temperature without heating, so that the device is simplified and the energy is saved.

Film treating agent for treatment before electro-coating of die-cast aluminum alloy workpiece and preparation method thereof

The invention relates to a normal-temperature cleaning anti-rust agent of a cylinder body of a host machine of an iron-casting diesel engine and a preparation method thereof; the anti-rust agent has aformula as follows: 2-8 percent of sodium tripolyphosphate, 2-8 percent of sodium hexametaphosphate, 2-10 percent of metasilicate pentahydrate, 1-4 percent of sodium hydrogen carbonate, 8-12 percentof QYL-23, 3-6 percent of AEO, 0.1-1.2 percent of JFC, 4-6 percent of polyethyleneglycol, 3-5 percent of sulfonated castor oil, 0.2-2 percent of nekal BX, 3-5 percent of defoamer and remaining water;the preparation method is that: running water is added in a reaction kettle, the temperature is heated to 40-50 DEG C, and then the running water is stirred, and then the sodium tripolyphosphate, thesodium hexametaphosphate, the metasilicate pentahydrate, the sodium hydrogen carbonate, the nekal BX are sequentially added and are stirred until the temperature is reduced to below 30 DEG C, and thenthe QYL-23, the AEO, the JFC, the polyethyleneglycol and the sulfonated castor oil which are metered are sequentially added, until water-solubility liquid is formed. The anti-rust agent can be used at normal temperature and energy is saved; meanwhile, the anti-rust agent has the functions of rust protection, simple process and low cost; and the method can be easily operated and controlled.

Yongli Cheng

Papers

Film treating agent for treatment before electro-coating of die-cast aluminum alloy workpiece and preparation method thereof

Normal-temperature cleaning anti-rust agent of cylinder body of host machine of iron-casting diesel engine and preparation method thereof