CN2615791Y

CN2615791Y - Sand casting demonstration instrument

Info

Publication number: CN2615791Y
Application number: CN 03216937
Authority: CN
Inventors: 綦明正; 李延胜; 宋金清; 华登峰
Original assignee: Qingdao University
Current assignee: Qingdao University
Priority date: 2003-04-30
Filing date: 2003-04-30
Publication date: 2004-05-12
Anticipated expiration: 2013-04-30

Abstract

The utility model relates to a sand sell mould demonstrating device which can demonstrate the entire process involved in foundry procedure teaching experiments, mainly comprising a top sand box, a bottom sand box, glass walls, mould sands, handlebar and other components. The top and bottom sand boxes of the demonstrating device which is the box-type are the symmetric rectangular case shape and three sides of the boxes are made of metal or wood materials. The front side is fixed with a transparent glass wall through screws, in order to make sure the physical changing states in the deformation process of the casting objects can be clearly observed in the casting demonstration, also achieving the objective understanding the objective contents and mechanism of state changes. Using casting objects made of mixtures of paraffin and stearic acid to instead of metal casting liquid can reflect the entire casting process of state changes more vividly and enables students to experience and understand the mechanisms of casting process more intuitively.

Description

The sand casting demonstrator

Technical field:

The utility model relates to a kind of education experiment sand casting demonstrator of overall process demonstration foundry technology process, particularly a kind of new teaching experimental article that can substitute existing camera bellows casting demonstrator.

Technical background:

Foundry engieering is that university student and postgraduate offer one of important teaching demonstration in " metallurgical technology " course and experimental content of courses.Foundry Production is to make casting mold, and liquid metals is poured in the casting mold cavity that adapts with part shape, treats to obtain after its cooled and solidified the molding mode of foundry goods.Sand casting is to be the forging type of made casting mold model with the molding sand, is study and puts into practice one of basic contents of foundry production.Generally speaking, existing sand casting process is to demonstrate to finish under the camera bellows state of sealing, in teaching, experiment or practising method, study is difficult to overall process and observes the technological process of sand casting and all physical phenomenons in the forming process, make the content of courses not directly perceived, not vivid, be difficult to the teaching efficiency that reaches desirable, thereby also just influenced effectively finishing and realizing of the content of courses.Design concept of the present utility model is intended to intuitively, clearly to demonstrate from moulding, obtain sand casting production runes such as foundry goods after pouring into a mould, be solidified to knockout, the technological process of casting be can understand fully by presentation process, physical process and physical phenomenons such as the color of casting liquid in casting, cooling forming, body variation particularly can be observed directly.

Technology contents:

The utility model is to improve to finish on the basis that overcomes the opaque sand casting demonstration box that existing casting experimental teaching uses, its critical piece is made up of cope, drag box, glass wall, molding sand, handgrip etc., its cope of the demonstrator of case structure and drag box are the boxlike of the rectangular shape of symmetrical structure, its three sides utilize metal or wooden making, leading flank is fixed with transparent glass wall by screw, so that observe the process of casting and condensation shaping, be shaped on handgrip respectively on the side, two ends of cope and drag box.When on the utility model, demonstrating according to existing sand casting demonstration technology, can be well understood to the experimentation and the condensation forming process of casting liquid in the casting mold cavity of sand casting, particularly can allow the student in presentation process, intuitively, clearly be familiar with, pour into a mould, be solidified to the physical phenomenon that takes place the production run that obtains sand casting such as foundry goods behind the knockout and the process thereof, reach teaching purpose and effect effectively from moulding.

Description of drawings:

Fig. 1 is a structural principle synoptic diagram of the present utility model.

Embodiment:

Enforcement structure of the present utility model is formed to be had: cope 1, molding sand 2, liquid pouring thing 3, cast gate cavity 4, in detour cavity 5, casting mold cavity 6, glass wall 7, fixed screw 8, screw hole 9, drag box 10 and handgrip 11.Cope 1 and drag box 10 are the box structure of symmetry when manufacturing, its same side is that leading flank is all made glass wall 7 with transparent and resistant to elevated temperatures vitreum, by screw hole 9 glass wall is separately fixed at the casing of the box structure of cope 1 and an integral body of drag box 10 alignment back formation with screw 8.During demonstration, the cast model of intending casting is placed between the side of close glass wall 7 of drag box 10, buckle cope 1 and in casing, fill full molding sand 2, in molding sand 2, form casting mold cavity 6 according to existing conventional processing step, and detour in cope 1, leaving cavity 5 and cast gate cavity 4, when guaranteeing liquid pouring thing 3 from 4 cast of cast gate cavity, liquid pouring thing 3 can enter casting mold cavity 6 by the interior cavity 5 that detours smoothly, and can observe whole moulding by casting process by glass wall 7.In order to make liquid pouring thing 3 in casting cycle, can fully reflect physical change situation in the Foundry Production, during experimental demonstration, its liquid pouring thing 3 selects for use paraffin and stearic acid respectively to account for the mixture replacing metal casting liquid of 50% ratio, such potpourri can present different colors under different states of matter situations, more the physical change state in the reflection casting process of image.

Claims

1. sand casting demonstrator, form by cope, drag box, glass wall, molding sand and handgrip etc., its cope of demonstrator and the drag box that it is characterized in that case structure are the boxlike of the rectangular shape of symmetrical structure, metal or wooden making are adopted in three sides, leading flank is fixed with transparent glass wall by screw, is shaped on handgrip on the both ends of the surface of cope and drag box respectively.

2. sand casting demonstrator according to claim 1 is characterized in that used liquid pouring thing is respectively accounted for the potpourri of 50% ratio by paraffin and stearic acid.