CN203843103U

CN203843103U - Casting die capable of preventing forming of residues in bottom surface of binder ring

Info

Publication number: CN203843103U
Application number: CN201420218284.7U
Authority: CN
Inventors: 李志刚
Original assignee: Tianjin Hong Gang Cast Steel Co Ltd
Current assignee: Tianjin Hong Gang Cast Steel Co Ltd
Priority date: 2014-04-30
Filing date: 2014-04-30
Publication date: 2014-09-24
Anticipated expiration: 2024-04-30

Abstract

The utility model provides a casting die capable of preventing residues from forming in bottom surface of a binder ring and suitable for lost foam casting. The casting die comprises the binder ring, a pneumatic ejector rod and a reinforcing plate, wherein the pneumatic ejector rod is arranged on the bottom surface of the binder ring; the reinforcing plate is arranged at the lower end of the pneumatic ejector rod. By virtue of the casting die, the reinforcing plate with thickness being 20mm is arranged at the lower end of the pneumatic ejector rod; the width of the reinforcing plate is as same as the diameter of the pneumatic ejector rod, so that the volume of the pneumatic ejector rod part is increased to a certain extent; the cooling and solidifying speed of molten iron in the pneumatic ejector rod is slowed and the residues can be effectively discharged into the reinforcing plate smoothly, so that the residues in the pneumatic ejector rod are reduced, thus the rest of the defect in the later period can be processed more simply; the functions of reinforcing the pneumatic ejector rod and preventing the pneumatic ejector rod from deforming are achieved, so that the deformation of the pneumatic ejector rod during shaping and solidifying is avoided, thus the quality of castings is improved.

Description

A kind of casting pattern that prevents blank holder bottom surface residue

Technical field

The utility model relates to lost foam casting field, relates in particular to a kind of casting pattern that prevents blank holder bottom surface residue.

Background technology

In cast casting process, in order to save cost, each producer substantially all selects scrap iron or steel scrap as metallurgical material, in these waste and old materials, contains much impurity or oxide layer, and these impurity are difficult for fusing in the process of melting, and be difficult for cleaning out, flow in goods in cast Shi Huiyantang road, especially in lost foam casting, in the halfway situation of foam gasification itself, also very easily produce residue, affect the most at last the quality of goods.For blank holder, residue is subject to the effect of molten iron buoyancy to float up to pneumatic jack bar place, but the structure at pneumatic jack bar position is less, cooling velocity after casting complete is also located fast compared with other large, the flowing velocity of iron liquid is affected, thereby make foundry goods have quality defect, traditional solution is to increase rising head in the bottom surface of model, by iron buoyancy of water, residue is come in rising head, the process later stage is processed processing to the structure place that is provided with rising head, reach the object that improves casting quality, but consideration Cost Problems, most of producer rising head is just optionally settled, for the place of not settling rising head, machine the existence of rear pneumatic jack bar place and do not drain clean residue, when this defect appears in foundry goods, often need same client to consult to carry out soldering processing, but in the time that defect is more, deal with very difficult, even cause foundry goods to be scrapped, this defect problem is perplexing each manufacturer for a long time, and pneumatic jack bar is long rod structure, the defect such as likely can deform in moulding, process of setting, thus affect casting quality.

Summary of the invention

According to above technical problem, the utility model provides a kind of casting pattern of prevented from blank holder bottom surface residue of applicable lost foam casting, comprise blank holder, pneumatic jack bar, it is characterized in that: also comprise stiffener, the bottom surface of described blank holder is provided with pneumatic jack bar, and the lower end of described pneumatic jack bar is provided with stiffener.

Described pneumatic jack bar has N, N >=1.

Described stiffener is that thickness is the cystosepiment of 20mm.

The equal diameters of the width of the attachment surface of described stiffener and pneumatic jack bar upper end.

The beneficial effects of the utility model are: the utility model improves on original casting pattern, increased the thick stiffener of one deck 20mm in the lower end of pneumatic jack bar, the width of stiffener is identical with pneumatic jack shank diameter, not only increase to a certain extent the volume at pneumatic jack bar position, delay the cooled and solidified speed of pneumatic jack bar place molten iron, effectively residue is discharged in stiffener smoothly, reduce the residue in pneumatic jack bar, make the surplus of later stage defect process easier, and pneumatic jack bar is played to reinforcing, prevent the effect of distortion, avoid pneumatic jack bar in moulding, situation about deforming while solidifying, thereby improve the quality of foundry goods.

Brief description of the drawings

Fig. 1 is the utility model structural representation.

Detailed description of the invention

Shown in Fig. 1, the utility model is further described:

As Fig. 1, blank holder-1, pneumatic jack bar-2, stiffener-3.

Embodiment 1

The utility model comprises blank holder 1, pneumatic jack bar 2, stiffener 3, when making, first pneumatic jack bar 2 is bonded in to the bottom surface of blank holder 1, then with the lower end that the foam stiffener 3 that width is identical with pneumatic jack bar 2 diameters, thickness is 20mm is bonded in pneumatic jack bar 2, pneumatic jack bar 2 is coupled together.

Embodiment 2

When use, casting pattern is imbedded in molding sand, then pouring molten iron, when molten iron stamp is during to bottom surface, residue is subject to the effect of molten iron buoyancy, is drained in stiffener 3, has ensured the quality of foundry goods at pneumatic jack bar place 2.

The above is only preferred embodiment of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvement, these improve and also should be considered as protection domain of the present utility model.

Claims

1. can prevent a casting pattern for blank holder bottom surface residue, comprise blank holder, pneumatic jack bar, it is characterized in that: also comprise stiffener, the bottom surface of described blank holder is provided with pneumatic jack bar, and the lower end of described pneumatic jack bar is provided with stiffener.

2. according to a kind of casting pattern that prevents blank holder bottom surface residue claimed in claim 1, it is characterized in that: described pneumatic jack bar has N, N >=1.

3. according to a kind of casting pattern that prevents blank holder bottom surface residue claimed in claim 1, it is characterized in that: described stiffener is that thickness is the cystosepiment of 20mm.

4. according to a kind of casting pattern that prevents blank holder bottom surface residue claimed in claim 1, it is characterized in that: the equal diameters of the width of the attachment surface of described stiffener and pneumatic jack bar upper end.