Method for measuring phosphor content in cold rolled degreasing agent

A measurement method and degreasing agent technology, applied in the field of cold rolling aids, can solve problems such as degreasing agent interference, achieve good accuracy, strong anti-interference ability, and ensure the effect of rolling quality
CN102411026AInactive Publication Date: 2012-04-11SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
Publication Date
2012-04-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a cold rolled auxiliary agent, concretely relates to a method for detecting the quality of a cold rolled degreasing agent. The method for measuring phosphor content in the cold rolled degreasing agent comprises the following steps: weighting 2.0000g sample degreasing agent in a teflon beaker, adding a few pure water, adding dilute nitric acid for regulating the pH value of 4-9; adding 2-5 milliliters nitric acid with volume ratio of 1:1, degrading on an electric furnace; slowly adding 2-8 milliliters hydrogen peroxide after boiling, keeping the slight boiling state for 10 minutes; transferring a digestion solution in a volumetric flask, controlling 0.5-2% of nitric acid medium, diluting by using water to scale, uniformly sharking to obtain the sample to be measured; injecting the sample in a ICP quartz tube, determining optical radiation intensity generated under the 213.618nm detection wavelength of ground state atom of phosphor by a plasma spectra method, thereby the phosphor content in the degreasing agent sample can be quantified. The determination method of the phosphor content has strong anti-interference capability, and is especially suitable for detecting complex matrix of degreasing agent and the like.
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Description

technical field

[0001] The invention relates to a cold rolling aid, in particular to a method for detecting the quality of a cold rolling degreasing agent. Background technique

[0002] Cold-rolled degreasing agent is a process medium for degreasing cold-rolled metal sheets before galvanizing and color coating. The degreasing agent itself is mainly composed of sodium hydroxide and is compounded with a variety of chemical raw materials. The removal efficiency of dirt such as processing lubricating oil and anti-rust oil and even the surface quality of the steel plate have a direct impact. Among them, the content of various forms of phosphorus directly affects the degreasing effect. In the past two years, the influence of phosphorus content on the degreasing effect has begun to attract people's attention. At present, the cold rolling process is generally controlled below 50μg / g, so the phosphorus content must be accurate. Determination.

[0003] However, neither degreaser nor...

Claims

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