Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Detection method of high-temperature manganese-series phosphating solution

A technology of manganese-based phosphating solution and detection method, which is applied in the direction of material analysis by observing the influence on chemical indicators, and analysis by chemical reaction of materials, etc., can solve inaccurate, inaccurate and inaccurate detection data. Accuracy and other issues, to achieve the effect of accurate detection data, good detection repeatability, and good detection reproducibility

Inactive Publication Date: 2019-01-08
AVIC LIYUAN HYDRAULIC
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the change in the amount of phenolphthalein indicator will also lead to inaccurate detection data of high temperature manganese phosphating solution
[0009] In addition, since the free acid Fa and the total acid Ta are detected by dropping the NaOH standard solution manually, it cannot be guaranteed that the dropped NaOH standard solution and the components of the high-temperature manganese phosphating solution react completely according to the stoichiometric relationship of the reaction formula. , resulting in inaccurate detection data of high temperature manganese phosphating solution
[0010] In addition, the inhomogeneity of sampling the high-temperature manganese-based phosphating solution may also lead to inaccurate detection data of the high-temperature manganese-based phosphating solution
[0011] Therefore, manual titration detection of high-temperature manganese phosphating solution has the defects of inaccurate detection data, poor detection repeatability and poor detection reproducibility

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Detection method of high-temperature manganese-series phosphating solution
  • Detection method of high-temperature manganese-series phosphating solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1. A detection method of a high-temperature manganese-based phosphating solution is to carry out titration detection successively to free acid Fa and total acid Ta in the high-temperature manganese-based phosphating solution, comprising the following steps,

[0038] a. Take 5mL of high-temperature manganese-based phosphating solution as product A,

[0039] b. Add 100mL of deionized water and 0.15-0.2mL of methyl orange indicator to product A to get product B.

[0040] c. Detect product B with a pH meter, stir product B at the same time, and titrate product B with 0.1mol / L NaOH solution at the same time, until product B turns orange-yellow and the pH meter shows a value of 3.7≤pH≤3.9 to obtain product C, and Record the consumed volume V of NaOH solution 4 ,

[0041] d. Add 0.2-0.25mL of phenolphthalein indicator to product C to obtain product D.

[0042] e. Use a pH meter to detect product D, stir product D at the same time, and titrate product D with 0.1mol / ...

Embodiment 2

[0048] Example 2. A detection method of a high-temperature manganese-based phosphating solution is to carry out titration detection successively to free acid Fa and total acid Ta in the high-temperature manganese-based phosphating solution, comprising the following steps,

[0049] a. Take V 3 mL of high temperature manganese phosphating solution as product A,

[0050] b. Add 18·V to product A in sequence 3 mL of deionized water and 0.03 V 3 mL of methyl orange indicator, to get product B,

[0051] c. Use a pH meter to detect product B, stir product B at the same time, and titrate product B with Nmol / L NaOH solution at the same time, until product B turns orange-yellow and the pH meter shows a value of 3.7≤pH≤3.9, obtain product C, and record Consumption volume V of NaOH solution 4 ,

[0052] d. Add 0.04 V to product C 3 mL of phenolphthalein indicator, to obtain product D,

[0053] e. Use a pH meter to detect product D, stir product D at the same time, and titrate prod...

Embodiment 3

[0059] Example 3. A detection method of a high-temperature manganese-based phosphating solution is to carry out titration detection successively to free acid Fa and total acid Ta in the high-temperature manganese-based phosphating solution, comprising the following steps,

[0060] a. Take V 3 mL of high temperature manganese phosphating solution as product A,

[0061] b. Add 22·V to product A in sequence 3 mL of deionized water and 0.04 V 3 mL of methyl orange indicator, to get product B,

[0062] c. Use a pH meter to detect product B, stir product B at the same time, and titrate product B with Nmol / L NaOH solution at the same time, until product B turns orange-yellow and the pH meter shows a value of 3.7≤pH≤3.9, obtain product C, and record Consumption volume V of NaOH solution 4 ,

[0063] d. Add 0.05 V to product C 3 mL of phenolphthalein indicator, to obtain product D,

[0064] e. Use a pH meter to detect product D, stir product D at the same time, and titrate prod...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a detection method of a high-temperature manganese-series phosphating solution. The method is to carry out titration detection on free acid Fa and total acid Ta in the high-temperature manganese-series phosphating solution and comprises the following steps: a, taking V3 mL of the high-temperature manganese-series phosphating solution as a product A; b, adding 18.V3 to 22.V3mL of deionized water and 0.03.V3-0.04.V3 mL of a methyl orange indicator into the product A to obtain a product B; c, detecting the product B with a pH meter, titrating the product B with an NaOH solution at a concentration of N mol / L to obtain a product C, and recording the consuming volume V4 of the NaOH solution; d, adding 0.04.V3 to 0.05.V3 mL of a phenolphthalein indicator into the productC to obtain a product D; e, detecting the product D with the pH meter, titrating the product D with the NaOH solution at the concentration of N mol / L, and recording the consuming volume V5 of the NaOHsolution; and f, obtaining the free acid Fa and the total acid Ta through calculation according to a formula. The detection method of the high-temperature manganese-series phosphating solution has the advantages of accurate detection data, high detection repetitiveness and high detection reproducibility.

Description

technical field [0001] The invention belongs to the detection field of manganese-based phosphating solutions, in particular to a detection method for high-temperature manganese-based phosphating solutions. Background technique [0002] At present, the detection of high-temperature manganese phosphating solution analysis usually adopts the indication method of the acid-base titration end point, and the indication method of the acid-base titration end point is divided into manual titration and potentiometric titration. The advantages of manual titration are low cost, fast, and convenient; potentiometric titration has high cost, simple operation, accurate measurement, and high precision. Make corrections. [0003] The data indicators for the detection of high temperature manganese phosphating solution by manual titration are free acid Fa and total acid Ta. The detection steps of free acid Fa are as follows: Take 5ml of high-temperature manganese phosphating solution as a samp...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78
CPCG01N21/78
Inventor 叶岚江文刘发刚王第珍吴凤梅刘俊
Owner AVIC LIYUAN HYDRAULIC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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