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

A riser structure, sand core and method for preventing riser leakage of molten iron

A riser and sand core technology, which is applied in the fields of riser structure, sand core and riser leakage prevention, can solve the problems of serious porosity in castings, difficult gas discharge, and difficult cleaning, so as to reduce porosity and avoid overflow of molten iron , the effect of reducing waste

Active Publication Date: 2020-08-25
CRRC CHANGZHOU AUTO PARTS CO LTD +1
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Waste of molten iron, difficult to clean, gas is not easy to discharge, resulting in serious casting porosity

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A riser structure, sand core and method for preventing riser leakage of molten iron
  • A riser structure, sand core and method for preventing riser leakage of molten iron
  • A riser structure, sand core and method for preventing riser leakage of molten iron

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Please refer to figure 1 , this embodiment provides a riser structure 100 , including a riser seat 10 , an overflow prevention ring 30 and a riser 50 .

[0036] Specifically, the riser seat 10 has a stepped hole, and the stepped hole includes a first segment 11 , a second segment 13 and a third segment 15 with successively larger diameters.

[0037] The first section 11 is used to communicate with the casting cavity, and the riser 50 is embedded in the second section 13 and forms an annular glue groove 60 for filling adhesive glue with the third section 15 . The anti-overflow ring 30 is sleeved on the riser 50 and connected to the riser seat 10 by adhesive.

[0038] The anti-overflow ring 30 includes a flat surface 31 and a circular platform 33 , the flat surface 31 is attached to the riser seat 10 , and the circular platform 33 is attached to the outer surface of the side wall of the riser 50 .

[0039] The riser 50 has an open end, and the outer diameter of the rise...

Embodiment 2

[0053] This embodiment provides a sand core, including a sand core body 70 and the riser structure 100 in Embodiment 1.

[0054] Specifically, the riser structure 100 is connected to the sand core body 70 . The sand core can have one or more riser structures 100 , and the size of the riser 50 of each riser structure 100 can be different, depending on the shape and size of the riser seat 10 .

[0055] The sand cores of different castings are different, but the riser 50 is usually used during pouring. Therefore, the riser structure 100 in Embodiment 1 has a wide range of application and can be adapted to the production of casting manufacturers.

[0056] By using the riser structure 100 in Embodiment 1, the sand core can reduce the waste of molten iron in the process of casting castings, and it is more convenient to clean up, and the porosity of the cast castings can be greatly reduced.

Embodiment 3

[0058] Please refer to figure 2 , This embodiment provides a method for preventing the riser from leaking molten iron, and the method uses the sand core in Embodiment 2.

[0059] Specifically, the method includes:

[0060] Install the riser 50 on the riser seat 10, and form a glue groove 60 between the riser 50 and the riser seat 10;

[0061] Fill the bonding glue in the glue groove 60;

[0062] Set the anti-overflow ring 30 on the riser 50 and press it tightly, so that the anti-overflow ring 30 is connected with the riser seat 10 .

[0063] In more detail, in the step of filling the glue groove 60 with adhesive glue, the glue glue fills the glue groove 60 and overflows from the glue groove 60 . In this way, when the anti-overflow ring 30 is sleeved, the anti-overflow ring 30 can be extruded to the adhesive, so that the adhesive is filled with the gap between the anti-overflow ring 30 and the riser seat 10, so that the adhesive glue will fill the anti-overflow ring 30 It ...

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

No PUM Login to View More

Abstract

The invention provides a riser structure, a sand core and a method for preventing molten iron from leaking from a riser, and relates to the technical field of casting. The riser structure comprises a riser base, an overflowing-prevention ring and a riser; the riser base is provided with a ladder hole, the ladder hole comprises a first segment, a second segment and a third segment with the hole diameters sequentially increased, the first segment is used for being communicated with a casting cavity, the riser is embedded in the second segment, an annular glue groove used for filling of bonding glue is defined by the riser and the third segment, the riser is sleeved with the overflowing-prevention ring, the overflowing-prevention ring is connected with the riser base through the bonding glue, the sand core comprises a sand core body and the riser structure, the riser structure is connected to the sand core body, and the method for preventing molten iron from leaking from the riser comprises the steps that the riser is mounted on the riser base, and the glue groove is formed between the riser and the riser base; the glue groove is filled with the bonding glue; the overflowing-prevention ring is arranged on the riser in a sleeving manner, pressing is carried out, and the overflowing-prevention ring and the riser base are connected. According to the riser structure, the sand core and the method for preventing molten iron from leaking from the riser, molten iron can be saved, and the casting porosity can be reduced.

Description

technical field [0001] The invention relates to the field of casting technology, in particular to a riser structure, a sand core and a method for preventing the riser from leaking molten iron. Background technique [0002] Both shrinkage cavity and shrinkage porosity reduce the mechanical properties of castings, and shrinkage porosity also causes leakage of castings during air tightness test and hydraulic test. In production, the process measures of setting risers at the thick wall of the casting can be used to transfer the shrinkage cavity to the riser that finally solidifies, so as to obtain a complete casting. [0003] The riser is the cavity in the mold used to store the molten metal, and the metal is replenished when the casting is formed. It is customary to call the metal entity cast by the riser also called the riser. The riser is a redundant part, and a complete and dense casting can be obtained after removal; it is also possible to prevent the occurrence of shrinka...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/08B22C9/10
CPCB22C9/088B22C9/10
Inventor 李卫忠孙铨戚玉凤江飞席洪波
Owner CRRC CHANGZHOU AUTO PARTS CO LTD