A kind of determination method of oxygen content in iron powder
A technology of oxygen content and measurement method, which is applied in the field of measurement, can solve the problems of high cost, rust, time-consuming and labor-intensive, etc., and achieve the effect of convenient operation, economical and applicable operation
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0014] Example 1: The batch number 1211147 Jiande Yitong 300W water atomized iron powder purchased on November 24, 2012 was tested, and the result was that the oxygen content was 0.04%. Conform to the standard: oxygen content <0.2% (executive standard: Q / YTJ001-2009), the specific steps are as follows:
[0015] (1) Take a bag of iron powder (1 ton) and sample three places, weigh 50g each, and then mix according to the ratio: graphite powder 0.5g, iron powder 49.5g.
[0016] (2) After mixing, weigh 1.000g on a precision balance, and measure the carbon content on a carbon and sulfur analyzer: 0.630%, 0.560%, and 0.595%
[0017] Average X 1 =(0.630%+0.560%+0.595%)÷3=0.595%
[0018] Carbon segregation=0.630%-0.595%=0.035%, carbon segregation is within 0.1%, qualified.
[0019] (3) Put the three groups of mixed powder into the mold respectively, and press it into a green compact with a diameter of φ20 and a height of 15mm on a material testing machine.
[0020] (4) Sintering in...
Embodiment 2
[0024] Example 2: 13 tons of 100-mesh reduced iron powder purchased on November 28, 2012 without the name of the manufacturer was tested, and the result was that the oxygen content was 0.676%. According to the national standard GB / T4136-1994: the oxygen content of the brand FHY100.25 reduced iron powder is less than 0.3%, and this batch of iron powder seriously exceeds the standard. The specific steps are as follows:
[0025] (1) Take a bag of iron powder (1 ton) and sample three places, weigh 50g each, and then mix according to the ratio: graphite powder 0.5g, iron powder 49.5g.
[0026] (2) After mixing, weigh 1.000g on a precision balance, and measure the carbon content on a carbon and sulfur analyzer: 0.720%, 0.700%, and 0.650%
[0027] Average X 1 =(0.720%+0.700%+0.650%)÷3=0.690%
[0028] Carbon segregation=0.720%-0.690%=0.03%, carbon segregation is within 0.1%, qualified.
[0029] (3) The three groups of mixed powders were put into the mold respectively, and pressed i...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com