Leadless environment friendly bismuth brass alloy material suitable for gravity force cast and manufacture method thereof

An alloy material and gravity casting technology, which is applied in the field of lead-free easy-cutting and environmentally friendly brass alloy materials, can solve the problems of casting yield decline, poor fluidity, and insufficient casting finish, so as to improve fluidity, ensure quality and finished products The effect of high efficiency and excellent casting performance

Active Publication Date: 2009-01-14
浙江中瀚智能控制股份有限公司
View PDF0 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned alloy materials take into account many uses as plastic alloys, rolled alloys or cast alloys, but cause practical shortcomings in the process of practical application
For example, in the casting process, the fluidity is often poor, the casting finish is not enough, and the grain arrangement is not particularly uniform
If it is used in gravity casting, more casting defects will appear, resulting in a decline in the yield of castings and affecting the application of castings as high-end products

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
  • Leadless environment friendly bismuth brass alloy material suitable for gravity force cast and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] The lead-free environment-friendly brass alloy material suitable for gravity casting and its preparation method of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention cannot be limited by this.

[0048] The present invention is suitable for the lead-free environment-friendly brass alloy material composition requirement of gravity casting as follows:

[0049] Element Mass %

[0050] Copper: 57%~63%

[0051] Lead: ≤0.1%

[0052] Aluminum: 0.2%~0.65%

[0053] Iron: ≤0.5%

[0054] Tin: 0.1%~3.0%

[0055] Bismuth: 0.4%~3.0%

[0056] Nickel: ≤0.5%

[0057] The balance is zinc and unavoidable impurities.

[0058] On the premise of the above composition requirements, as an optimized configuration to achieve better technical effects, the following scheme is proposed:

[0059] Copper: 58%~61%

[0060] Lead: ≤0.08%

[0061] Aluminum: 0.3%~...

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 relates to a lead-free environment-friendly bismuth brass alloy material suitable for gravity casting. The alloy material comprises the following chemical elements: 57 to 63 percent of brass, 0.1 percent or less than 0.1 percent of lead, 0.2 to 0.65 percent of aluminum, 0.5 percent or less than 0.5 percent of iron, 0.1 to 3.0 percent of tin, 0.4 to 3.0 percent of bismuth, 0.5 percent or less than 0.5 percent of nickel, balance zinc and unavoidable impurities. The lead content of the brass alloy material of the invention is greatly reduced and conforms to the environmental protection and health requirements, and meanwhile the lead-free environment-friendly brass alloy material has excellent casing performance, is suitable for casting, in particular for larger-scale gravity casting, and has extensively application prospect in the sanitary-ware industry.

Description

technical field [0001] The invention relates to a lead-free brass alloy, in particular to a lead-free easy-cutting environment-friendly brass alloy material with excellent casting performance, corrosion resistance and subsequent machining performance. They are especially suitable for water supply system castings, valves, etc. They are metal materials that are beneficial to human health and environmental protection, and are also excellent substitutes for lead brass, which is widely used at present and can cause adverse effects on the human body and the environment. Background technique [0002] Lead brass has excellent mechanical and physical properties, good casting performance and cutting performance, and is cheap, so it is widely used in instrumentation, electronics, electrical appliances, daily hardware, drinking water systems, etc., especially Hpb59-1 The production and application volume is the largest. [0003] However, lead and its compounds are one of the 17 chemica...

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): C22C9/04C22C1/03
Inventor 蒋明川
Owner 浙江中瀚智能控制股份有限公司
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