Unlock instant, AI-driven research and patent intelligence for your innovation.

Manufacturing method of resin sand for copper alloy propeller

A manufacturing method and technology for propellers, which are applied in manufacturing tools, casting molding equipment, metal processing equipment, etc., can solve the problems of adverse effects of copper alloy propeller modeling, non-recyclability, short molding time, etc. Easy to firm, good flow effect

Inactive Publication Date: 2018-03-09
QINGDAO TIANDI CASTING CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the above-mentioned technical problems existing in the prior art field, the object of the present invention is to provide a copper alloy propeller resin sand manufacturing method to solve the short molding time and large amount of gas generation of the traditional resin sand process, which has a negative impact on the copper alloy propeller molding. The problem of adverse effects, and solve the problems of easy mold sticking and non-recyclability of the existing water glass sand molding method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0015] A kind of copper alloy propeller resin sand manufacturing method of the present embodiment comprises the following steps:

[0016] (1) Sand mixing, 30% of new sand, 70% of old sand, 1.6% of furan resin equivalent to the weight of mixed sand, curing agent of 400% of furan resin weight, and mixed acid with a ratio of strong and weak acids of 1:2 are put into continuous The molding sand is mixed by a sand mixer; the sand flow error of the continuous sand mixer is ≤±6%, the error of the amount of furan resin added is ≤-4%, the error of the amount of curing agent is ≤±3%; the tensile strength of the molding sand is 1.5MPa, The compressive strength is 4.8MPa, and the usable time of the molding sand is 1 hour;

[0017] (2) Modeling, using the support and cover plate molding process, the process includes:

[0018] (2.1) Evenly place 1 / 2-inch water and gas pipes in the radial direction of the supporting plate (2), the length of which depends on the size of the supporting plate,...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Tensile strengthaaaaaaaaaa
Compressive strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for manufacturing copper alloy propeller resin sand. The process includes: (1) uniformly placing water and gas pipes in the radial direction of the supporting plate, drilling holes on it at specified intervals and placing exhaust ropes; (2) The vertical and horizontal water and gas pipes are evenly placed on the upper box, and welded into a grid according to the specified spacing, and the water and gas pipes are also drilled according to the specified spacing; (3) Evenly pierce the air holes on the supporting plate and the upper box to facilitate exhaust; ( 4) Baking type, the temperature of the baking type is 120-150°C, and the time is 12-26 hours.

Description

technical field [0001] The invention belongs to the technical field of casting, and in particular relates to a method for manufacturing copper alloy propeller resin sand. Background technique [0002] Due to the heavy weight, complex curved surface and precise size requirements of marine copper alloy propellers, traditional manual modeling methods are mostly used in the production and modeling process. In view of the high requirements for the usable time of the molding sand, and the need to avoid the adverse effects of the large amount of gas generated by the molding sand on the copper alloy castings during the pouring process, at present, most copper alloy castings at home and abroad are molded with water glass sand. However, sodium silicate sand has the disadvantages of easy mold sticking, poor sand shakeout, difficult recycling, high cost, high water content, and environmental pollution, so it is not suitable for use in the modeling of large copper alloy propellers for ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B22C1/22B22C9/02B22C9/22
CPCB22C1/224B22C9/02B22C9/22
Inventor 李玉敏
Owner QINGDAO TIANDI CASTING CO LTD