Spectrum standard sample for detecting coin-manufacturing non-corrosive steel and its manufacture method

Abstract

The invention relates to a kind of stainless steel spectrum standard sample, especially the spectrum standard sample used to detect the coinage stainless steel and the manufacturing method. It computes the each material additive quantity according to the formula based on the impurity element C, Si, Mn, P, S and additive element B, Ni, Cu, Cr; Fe is the base material. The material is added into the vacuum induction smelting furnace to cast. When the material is smelted to 95%, the sample is analyzed; then it adjust the steel liquid chemical component according to the analyzing result; it adjusts the Si content using the ferrosilicium when 7-10min before tapping; the ferroboron is pre-added into the steel ingot mould; after each element meeting the request, it controls the tapping temperature: 1520-1540deg.C, the steel liquid is poured into the steel ingot mould, after cooling, the sample number is printing on. The spectrum standard has the good uniformity, wide compound content and many element kinds; the process is advance and the value is accurate; the content grads are in reason. So it is better than the other same sample in analyzing the coinage stainless material.

Description

technical field [0001] The invention relates to a stainless steel spectrum standard sample, in particular to a spectrum standard sample used for detecting coinage stainless steel and a manufacturing method thereof. Background technique [0002] Coins made of stainless steel not only have a certain degree of appreciation for their silver-white metallic luster, but also have better performance indicators such as corrosion resistance and discoloration resistance than copper alloy coins, and the cost is lower than the latter. Therefore, there are coins made of stainless steel in the coin series issued by many countries in the world. Due to factors such as confidentiality and anti-counterfeiting, the chemical composition of stainless steel used in various countries is different. For a long time, there have been no coins made of stainless steel for RMB. In response to this situation, after a lot of investigation and research, China Banknote Printing and Minting Corporation develop...

AI Technical Summary

Problems solved by technology

By searching relevant patents and documents at home and abroad, the relevant British stainless steel spectral standard samples, Japanese relevant stainless steel spectral standard samples, and domestic Cr13 spectral standard samples of GBW01605-01609, GSBA68001-68007 stainless steel spectral standard samples, and GSBH400115-1996 stainless steel spectral standard samples The standard sample was compared and analyzed, and it was found that the above spectral standard sample had the following points that were not suitable for the analysis of domestic coinage stainless steel materials: 1. It was inconsistent with the domestic coinage stainless steel material matrix; 2. The anti-counterfeiting element B could not be detected; 3. The content distribution of other elements was not good. Ideal etc.

In short, the stainless steel spectral standard samples currently on the domestic and foreign markets are basically developed for civilian stainless steel products, with a narrow scope of application, and cannot simultaneously meet all the conditions required for the analysis of domestic coinage stainless steel