V-method molding process of castable propeller
A molding process and propeller technology, applied in the direction of casting molding equipment, casting molds, casting mold components, etc., can solve the problems of low recovery rate and hazards of mixed sand, achieve high production efficiency, reduce customer investment, and high surface precision.
Inactive Publication Date: 2020-10-16
QINGDAO SHENGMEI MACHINERY
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Problems solved by technology
[0002] At present, the resin sand molding process is used to produce propellers. The resin sand molding process uses the mixed self-setting sand formed by adding resin and curing agent to the molding sand. The resin and curing agent are chemical agents, and long-term contact will cause harm to the human body. Harmful, and the recovery rate of mixed sand after molding is low
Method used
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Embodiment 1
[0019] Embodiment 1, this embodiment discloses a V-method molding process for a castable propeller, including the following steps:
[0020] (1) Propeller mold production: A propeller mold is divided into an upper mold box and a lower mold box, which are respectively placed in a negative pressure box. According to the size of the propeller, one box can have multiple pieces;
[0021] (2) Sand box production: filter and air extraction devices are installed inside the sand box to vacuumize after the molding sand is lowered into the sand box;
[0022] (3) Molding: The treated molding sand is formed into a closed propeller cavity in the sand box through vibration and vacuuming process. The process flow is: place the upper negative pressure box and the lower negative pressure box on the vibration table respectively On the top, the mobile vibrating table transfers the negative pressure box to the film-coating station, and then covers the negative pressure box, and then moves the vibra...
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The invention discloses a V-method molding process of a castable propeller. The process comprises the following steps of (1) manufacturing of a propeller mold, wherein the propeller mold is divided into an upper mold box and a lower mold box which are placed in negative-pressure boxes correspondingly, and the multiple molds can be placed in one box according to the size of the propeller.; (2) manufacturing of a sand box: arranging a filtering and air extraction device in the sand box, so that the sand box is vacuumized after molding sand is charged into the sand box; (3) modeling; and (4) casting: vacuumizing the sand box while conducting casting on the sand box since the propeller a steel cast part, maintaining the vacuum degree within minus 0.6-minus 0.7 Mpa and remaining the vacuumizingpressure unchanged for 5 min after casting. According to the V-method molding process of the castable propeller, the propeller is produced through the V-method instead of traditional phenolic sand molding; and single dry sand is adopted as molding sand without addition of water, a bonding agent and an additive, and the molding sand can be cyclically used.
Description
technical field [0001] The invention belongs to the field of propeller casting, in particular to a V-method molding process of a castable propeller in the field. Background technique [0002] At present, the resin sand molding process is used to produce propellers. The resin sand molding process uses the mixed self-setting sand formed by adding resin and curing agent to the molding sand. The resin and curing agent are chemical agents, and long-term contact will cause harm to the human body. harm, and the recovery rate of mixed sand after molding is low. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a V-method molding process for castable propellers. [0004] The present invention adopts following technical scheme: [0005] A V-method molding process for a castable propeller, the improvement of which includes the following steps: [0006] (1) Propeller mold production: A propeller mold is divided into an uppe...
Claims
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Login to View More IPC IPC(8): B22C9/03B22C9/22
CPCB22C9/03B22C9/22
Inventor 逄宗刚逄锴悦丁雪杨长春张志强周天波朱晓霞
Owner QINGDAO SHENGMEI MACHINERY