Supercharge Your Innovation With Domain-Expert AI Agents!

A core-making method for a turbine shell runner core

A technology of runner core and turbine shell, which is applied to cores, manufacturing tools, casting and molding equipment, etc., can solve problems such as coarseness, and achieve the effect of reducing gas generation, reducing the proportion of gas slag hole defects, and improving quality

Active Publication Date: 2017-10-27
CRRC CHANGZHOU AUTO PARTS CO LTD +1
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the inlet nozzle of some turbine shells with special structure is thicker and deeper, so the inlet nozzle of the flow channel core of the turbine casing will be thicker.

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 core-making method for a turbine shell runner core

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0018] Such as figure 1 As shown, a core-making method for a turbine casing runner core disclosed in this embodiment includes the following steps:

[0019] S1. The sand core 2 is produced on a core shooting machine, wherein the material of the sand core 2 is coated sand, and the hot core box core making parameters are curing temperature: 250±10°C, sand shooting time: 4-5s, Curing time 140s;

[0020] S2. Turn over the mold through the core-making equipment an...

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 manufacturing method of a flowing channel core of a turbine housing. The method is characterized in that a thick and big part of the flowing channel core of the turbine housing is hollowed out and then filled with crude silica sand; an opening is sealed with precoated sand which is mixed with alcohol in a certain proportion; then the flowing channel core is roasted and solidified for use. The method has the beneficial effects that the air release amount of a sand core can be greatly decreased, and the ratio of air-slag pore defect of a casting can be reduced to a great extent, so that the product quality can be improved.

Description

technical field [0001] The invention relates to the field of casting, in particular to a core-making method for a runner core of a turbine casing. Background technique [0002] Turbine casing castings have a complex structure and require high precision. At present, the production method of domestic turbine shell castings is mainly the coated sand full shell process. Even if it is produced on the green sand line, most of the shape of the turbine shell is wrapped by the coated sand core, and only the gating system and the riser are made by The wet mold sand is molded. The dimensional accuracy of the turbine casing produced by the coated sand cladding process is high, the probability of defects such as trachoma and sand washing is small, and the casting yield is high. [0003] However, some special-structured turbine casing inlet nozzles are thicker and deeper, so that the inlet nozzle of the flow channel core of the turbine casing will be thicker. During the core-making pro...

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): B22C9/10
CPCB22C9/10
Inventor 田辉郑立林段文恒杜崇山
Owner CRRC CHANGZHOU AUTO PARTS CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com