Rapid scaling method for hanging piece in laboratory

The invention discloses a rapid scaling method for a hanging piece in a laboratory. The method comprises the following steps: mounting a rotor on the bottom of the reaction vessel; preparing a calcium-magnesium ion solution with a certain initial concentration; placing a hanging piece with a surface roughness of greater than 6.3 after polishing into the calcium-magnesium ion solution; setting thedistance between the hanging piece and the rotor and the rotation speed of the rotor; and carrying out repeated heating and cooling and repeated pressure boosting and pressure reducing, wherein the partial pressure of carbon dioxide is increased to 6 MPa before heating, then the solution is rapidly heated to 100 DEG C and then rapidly cooled to 60 DEG C, a pressure drops to atmospheric pressure with a temperature maintained at 60 DEG C after every two cooling operations, chemical reagents consisting of calcium chloride and magnesium chloride are added to increase the concentration of calcium ions in the solution by 0.