Sample preparation and analysis method for primary and secondary components of seamless silicon-calcium core-spun yarn
An analysis method, cored wire technology, applied in the field of ion emission spectrometry, to achieve the effect of improving efficiency, high accuracy and reliability
Pending Publication Date: 2022-03-18
NANJING IRON & STEEL CO LTD
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Problems solved by technology
Manufacturers of silicon (silicon powder) calcium (calcium rod) cored wire usually use measurement algorithms to calculate the content of calcium and silicon in silicon (silicon powder) calcium (calcium rod) cored wire; that is, through the production of silicon (silicon powder) calcium (Calcium Rod) The weight of silicon powder and calcium rod added in the process of cored wire is measured to calculate the percentage of silicon and calcium in the silicon (silicon powder) calcium (calcium rod) cored wire. This method is not suitable for the acceptance inspection of the purchasing unit. Calcium and silicon content in silicon (silicon powder) calcium (calcium rod) cored wire, etc.
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[0018] The technical solutions of the present invention will be further described in detail below in conjunction with specific embodiments.
[0019] This embodiment provides a sample preparation and analysis method for the primary and secondary components of a seamless silicon-calcium cored wire. The silicon powder and the calcium rod in the silicon (silicon powder) calcium (calcium rod) cored wire are physically separated to prepare samples respectively. , use the chemical titration method to measure the silicon content in the silicon powder, use the ICP method to measure the silicon powder Mn, Al, P impurity element content; use the ICP method to measure the content of Al, Mg, Fe and other impurity elements in the calcium rod and calculate the calcium content etc., mainly including the following steps:
[0020] 1. Sample preparation: According to the number of sampling circles, randomly intercept core-spun wire sample sections according to 1 section / circle, and each section ...
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The invention discloses a sample preparation and analysis method for primary and secondary components of a seamless silicon-calcium core-spun yarn, which comprises a sample preparation step and a primary and secondary component analysis step, and is different from a method for directly crushing and uniformly mixing a silicon-calcium compound for chemical analysis in the prior art. The method comprises the following steps: separating silicon powder and a calcium rod by adopting a physical method, respectively preparing samples, and respectively detecting the content of elements such as Si and Mn in the silicon powder and the content of calcium and impurities in the calcium rod by adopting a chemical method, so that a silicon-calcium mixture which cannot be mechanically crushed and uniformly mixed in the core-spun yarn can be accurately detected, and the content and purity of silicon and calcium can be obtained. The method has high accuracy and reliability, and improves the efficiency of quality acceptance of the seamless silicon-calcium core-spun yarn in purchase and factory entering.
Description
technical field [0001] The invention belongs to the technical field of alloy cored wire sample preparation, chemical analysis and ICP plasma emission spectrum analysis, and specifically relates to a sample preparation, chemical method, and plasma emission spectrum analysis method for determining the primary and secondary components of silicon-calcium cored wire. Background technique [0002] At present, the seamless calcium-silicon cored wire is formed by wrapping metal calcium rods and metal silicon powder with strip-shaped steel strips. The cored wire can more effectively add smelting materials into the molten steel during the steelmaking or casting process. The cored wire can be inserted into the ideal position through professional wire feeding equipment. When the cored wire skin is melted, the wire core can be The ideal position is fully dissolved and produces a chemical reaction, which effectively avoids the reaction with air and slag, improves the absorption rate of sm...
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IPC IPC(8): G01N1/28G01N21/73
CPCG01N1/28G01N1/286G01N21/73G01N2001/2866
Inventor 刘素祥王一海叶晓晴
Owner NANJING IRON & STEEL CO LTD