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Measuring method of solid-solution boron content in steel

A determination method and technology of boron content, applied in the field of analytical chemistry, can solve the problems of large error of subtraction method and uneven distribution of inclusions

Inactive Publication Date: 2013-02-13
INNER MONGOLIA BAOTOU STEEL UNION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, solid solution boron in steel is obtained by subtraction method (total boron - compound boron). Due to the uneven distribution of boron inclusions in steel, the error of subtraction method is large

Method used

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  • Measuring method of solid-solution boron content in steel
  • Measuring method of solid-solution boron content in steel
  • Measuring method of solid-solution boron content in steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The sample is made into a column with a diameter of 8mm and a length of 80mm, and a groove with a depth of 2mm is dug at a distance of 4mm from the top. Observation shows that there is no hole or crack.

[0046] BT100H Steel 1 # Soak the sample in a measuring cup filled with 25mL of water and 25mL of ρ1.19g / mL hydrochloric acid for 30min, take it out, wash it, and dry it in the air; accurately weigh 88.4052g of the steel sample, use the weighed steel sample as the anode, and use the stainless steel cylinder As the cathode, put the glass beaker containing the prepared electrolyte into the electrolytic cell, electrolyze at 0.5A at 1°C for 90 minutes, remove it, put it into a 150mL quartz beaker for sampling by ultrasonic oscillation, and wash the steel sample with water. Rinse with ethanol, dry, and weigh 86.9012g. Take out the glass beaker from the electrolytic cell, stir the electrolyte solution after the electrolysis sample with a glass rod, pipette 10mL of the electr...

Embodiment 2

[0056] BT100H Steel 2 # The sample is made into a column with a diameter of 8mm and a length of 80mm, and a groove with a depth of 2mm is dug at a distance of 4mm from the top. Observation shows that there is no hole or crack, and it is quenched at 1150°C.

[0057] Soak the BT100H steel sample in a measuring cup filled with 25mL of water and 25mL of ρ1.19g / mL hydrochloric acid for 30min, take it out, wash it, and dry it in the air; accurately weigh 90.3174g of the steel sample, and use the weighed steel sample as the anode , the stainless steel cylinder is the cathode, put the glass beaker containing the prepared electrolyte into the electrolytic cell, the electrolysis current is 0.4A, and the electrolysis is performed at 3°C ​​for 60 minutes, then it is removed, put into a 150mL quartz beaker for ultrasonic vibration sampling, and the steel sample is water Wash, rinse with ethanol, dry, and weigh 89.2947g. Take out the glass beaker from the electrolytic cell, stir the electr...

Embodiment 3

[0062] Will Q 960 Steel 1 # The sample is made into a column with a diameter of 6mm and a length of 80mm, and a groove with a depth of 2mm is dug at a distance of 4mm from the top. Observation shows that there is no hole or crack.

[0063] Soak the Q 960 steel sample in a measuring cup filled with 25mL of water and 25mL of ρ1.19g / mL hydrochloric acid for 35min, take it out, wash it, and dry it in the air; accurately weigh 77.7851g of the steel sample, and weigh the weighed steel sample as The anode, the stainless steel cylinder is the cathode, put the glass beaker containing the prepared electrolyte into the electrolytic cell, the electrolysis current is 0.5A, at 5°C, electrolyze for 75min, take it off, put it into a 150mL quartz beaker for ultrasonic vibration sampling, steel samples Wash with water, rinse with ethanol, dry, and weigh 76.5833g. Take out the glass beaker from the electrolytic cell, stir the electrolyte solution after the electrolysis sample with a glass rod, ...

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Abstract

The invention relates to a measuring method of solid-solution boron content in steel, and belongs to the technical field of analytical chemistry. The method comprises the steps of: using a constant current electrolysis method to extract solid-solution boron at low temperature; transferring electrolyte with a certain volume, and diluting the electrolyte to be in a ruled volume; using an inductively coupled plasma source mass spectrometer to measure the solid-solution boron; and using a matching method to eliminate the influence of the components of the electrolyte on the measurement of the inductively coupled plasma source mass spectrometer. The measuring method has the advantage that the solid-solution boron content in the steel can be accurately measured.

Description

1. Technical field [0001] The invention belongs to the technical field of analytical chemistry and relates to a method for determining the content of solid solution boron in steel. 2. Background technology [0002] Boron is an important alloying element in steel. Boron mainly exists in the form of solid solution, carbide and nitride in steel. Different forms have different effects on the properties of steel. Especially under various heat treatment systems, the content of solid solution boron in steel is different, which has a great influence on the performance of steel, so it is very important to accurately determine its content. At present, solid solution boron in steel is obtained by subtraction method (total boron-compound boron). Due to the uneven distribution of boron inclusions in steel, the error of subtraction method is large. 3. Contents of the invention [0003] The purpose of the present invention is to disclose a method for measuring the content of solid-solut...

Claims

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Application Information

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IPC IPC(8): G01N27/64
Inventor 丁美英石林田永生刘淼
Owner INNER MONGOLIA BAOTOU STEEL UNION
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