Double-runner sand core of heat-resisting steel spiral case as well as producing method and locating method of sand core

A heat-resistant steel, double-runner technology, used in cores, manufacturing tools, casting and molding equipment, etc., can solve the problems of difficult molding, insufficient sand core, rough surface, etc., achieve high yield, solve pouring choking, surface smooth effect

Active Publication Date: 2019-01-04
西峡飞龙特种铸造有限公司
View PDF8 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the patent uses SiO 2 90% raw sand is used to make sand cores, the sand cores are insufficiently shot, the surface is rough, and it is difficult to shape

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
  • Double-runner sand core of heat-resisting steel spiral case as well as producing method and locating method of sand core
  • Double-runner sand core of heat-resisting steel spiral case as well as producing method and locating method of sand core
  • Double-runner sand core of heat-resisting steel spiral case as well as producing method and locating method of sand core

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A heat-resistant steel volute double-channel sand core is made of the following raw materials in weight percentage:

[0034] Ceramsite sand 78%, iron ore sand 15%, polyethylene resin 2.5%, calcium stearate 1.5% and curing agent 3.0%.

[0035] The curing agent is formed by mixing urotropine and water in a weight ratio of 1:0.7.

[0036] The particle size of the ceramsite sand is 70 mesh.

[0037] The grain size of described iron ore sand is 70 orders.

[0038] A method for manufacturing the above-mentioned heat-resistant steel volute double-channel sand core, comprising the following steps:

[0039] (1) Sand mixing: mix the above-mentioned raw materials evenly according to the proportion to obtain mixed sand;

[0040] (2) Core box heating: install the static and dynamic core boxes on the core shooter for heating, and heat the dynamic and static core boxes to 230°C and 210°C respectively;

[0041] (3) Sand filling: the mixed sand in step (1) is injected into the step ...

Embodiment 2

[0047] A heat-resistant steel volute double-channel sand core is made of the following raw materials in weight percentage:

[0048] 80% ceramsite sand, 14% iron ore sand, 2.3% polyethylene resin, 1.3% calcium stearate and 2.4% curing agent.

[0049] The curing agent is formed by mixing urotropine and water in a weight ratio of 1:0.6.

[0050] The particle size of the ceramsite sand is 140 mesh.

[0051] The particle size of the described iron ore sand is 90 mesh.

[0052] A method for manufacturing the above-mentioned heat-resistant steel volute double-channel sand core, comprising the following steps:

[0053] (1) Sand mixing: mix the above-mentioned raw materials evenly according to the proportion to obtain mixed sand;

[0054] (2) Core box heating: Install the dynamic and static core boxes on the core shooter for heating, and the dynamic and static core boxes are heated to 240°C and 230°C respectively;

[0055] (3) Sand filling: the mixed sand in step (1) is injected in...

Embodiment 3

[0059]A heat-resistant steel volute double-channel sand core is made of the following raw materials in weight percentage:

[0060] Ceramsite sand 81%, iron ore sand 13%, polyethylene resin 2.5%, calcium stearate 1.3% and curing agent 2.2%.

[0061] The curing agent is formed by mixing urotropine and water in a weight ratio of 1:1.

[0062] The particle size of the ceramsite sand is 90 mesh.

[0063] The particle size of the described iron ore sand is 90 mesh.

[0064] A method for manufacturing the above-mentioned heat-resistant steel volute double-channel sand core, comprising the following steps:

[0065] (1) Sand mixing: mix the above-mentioned raw materials evenly according to the proportion to obtain mixed sand;

[0066] (2) Core box heating: Install the static and dynamic core boxes on the core shooter for heating, and heat the dynamic and static core boxes to 240°C and 220°C respectively;

[0067] (3) Sand filling: the mixed sand in step (1) is injected into the ste...

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
particle sizeaaaaaaaaaa
depthaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a double-runner sand core of a heat-resisting steel spiral case as well as a producing method and a locating method of the sand core. The sand core is prepared from the following raw materials in percentage by weight: 78 to 85 percent of ceramsite sand, 9 to 15 percent of soldering iron sand, 2 to 3 percent of polyethylene resin, 1.0 to 1.5 percent of calcium stearate and 1.8 to 3.0 percent of a curing agent. The double-runner sand core disclosed by the invention has no batch seam burrs and has a smooth and compact surface; the problem that the sand core of the double-runner heat-resisting steel spiral case is difficult to form because of a thin wall of a runner is solved.

Description

technical field [0001] The invention belongs to the technical field of heat-resistant steel volute casting, and in particular relates to a heat-resistant steel volute double-channel sand core, a manufacturing method and a positioning method thereof. Background technique [0002] With the development of science and technology, it has greatly promoted the development and improvement of the engine industry, and correspondingly, the supercharger used with the engine has also been continuously updated and developed rapidly. The assembly and use of the heat-resistant steel double-channel turbocharger on the engine makes full use of the exhaust gas cycle of the vehicle and greatly reduces exhaust emissions. [0003] The flow channel of the double-channel volute is separated from the middle by a partition wall to form a double-sided flow channel. The gas flow is rectified and compressed in the flow channels on both sides respectively. When making flow channel sand cores, ordinary c...

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 Applications(China)
IPC IPC(8): B22C1/22B22C1/10B22C1/14B22C9/10B22C9/24
CPCB22C1/10B22C1/14B22C1/2213B22C9/103B22C9/108B22C9/24
Inventor 贾建法王瑞金刘松奇余嗣瑞李刚王延召闫国福王飞孙稳定李可丹任鹏宋会然
Owner 西峡飞龙特种铸造有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap