Detailed explanation of titanium agitator blade process| 4 types of blades + 5 steps of selection + 2 structural drawings + 5 steps of pit avoidance

Published by Engineering Team, Shaanxi Qianyi Tuoda Technology Co., Ltd on 2026-08-06

titanium stirrerEven if the type of agitation, matched power, Accurate speed parameter selection, Once the blades are mismatched,, There will still be uneven mixing of materials, Local overheating and other problems.Located in Baoji, China Titanium Valley, Shaanxi Province, 100 billion Tuoda, deep cultivationTitanium non-standard equipmentMade for years, Services a large number of chemical projects, It is often encountered that the blade form does not match with the working medium, which causes abnormal production cases.The structural characteristics of four kinds of titanium stirring blades are explained in detail, Dismantling 5-step selection logic, Five practical operation points to avoid pit, Matching blade structure and installation schematic, It is convenient for engineers and purchasers to complete the precise selection of titanium stirring blades.

Core conclusions:titanium stirrerCommonly used blades are divided into four categories, and most of the working conditions are preferably propeller or turbine blades.Low viscosity medium selection propulsion type, High viscosity materials choose anchor type or screw belt type, For reaction scenarios requiring strong shear, select turbo.Improper blade selection, poor mixing effect of materials, reaction efficiency decreased by 30%-50%.

A, four titanium stirring blade characteristics

Propelling blade designation P, Three-leaf spiral structure, Adapting medium viscosity ≤1000cP, Mostly used for low viscosity miscible liquid mixing conditionsTurbo blade code T, configured with 4 to 6 disc blades, suitable for viscosity range 1000-5000cP, suitable for reaction scenarios requiring strong shear and solid-liquid suspension;Anchor blade code A, Frame scraping structure, Adapted viscosity 5000-50000cP, For high viscosity materials, Scrape wall, Prevent coking of materialsRibbon blade code H, Double ribbon structure, Adapted viscosity ≥50000cP, Adapting to ultra-high viscosity, pseudo-plastic fluid.

[Core Question 1] How to distinguish between propeller blades and turbine blades? A: Propelling type produces axial flow, shear force is weak, suitable for low viscosity miscible liquid mixing;Turbine-type radial flow, strong shear capacity, mostly used in solid-liquid suspension and chemical reaction conditions.Pure material mixing selects propulsion type, with reaction, suspension demand priority turbine type.

II. Structural characteristics of blades

Propeller blades are three-blade helical patterns that work to generate axial flow;Turbine-type disc with 4-6 flat blades or folded blades, produce radial flow, with strong shear capacity;Anchor blade is integral frame scraping structure, suitable for high viscosity materials scraping operation;The ribbon type adopts double ribbon shape, specially dealing with the mixing of ultra-high viscosity materials.

Three, five step selection decision process

Step 1 Determine the viscosity of the medium, Viscosity ≤1000cP Select propulsion type, 1000-5000cP Turbo, 5000-50000cP anchor type, Viscosity ≥50000cP Select spiral belt type.The second step is to define the process objectives, select the propulsion type for pure material mixing, and select the turbine type for chemical reaction and solid-liquid suspension.Step 3 Determine the operating speed, Propelled conventional speed ≥200rpm, Turbo speed range 50-200rpm, anchor, The ribbon blade speed does not exceed 50rpm.Step 4 Calculate the matching power, Power density 0.1-0.5kW/m³, Power density of reaction condition 1 - 3 kW/m ³.The fifth step is to confirm the blade material, and select TA10 or TA9 for strong corrosion conditions;Bromine-containing medium is preferred TA10;TA9 material shall be selected for reducing acid condition and palladium content requirement.

[Core Question 2]titanium stirrerAre blade welds prone to cracking? A: Weld is the main cause of blade failure.Titanium blade welding must be GTAW tungsten argon arc welding, stress relief annealing treatment after welding, 550-600℃ heat preservation for 1 to 2 hours.If the annealing process is lacking, the residual stress is high, and weld cracking is easy to occur after 3 to 6 months.

IV. Real project application cases

PTA device propulsion titanium blade case, The medium is bromoacetic acid at 120℃, Viscosity 200cP, DN300 Three-leaf helical blade, 4 years of operation, blade corrosion free, The weld is intact without cracking.Chlor-alkali plant turbine blades, Medium 80℃ wet chlorine and sodium chloride system, Viscosity 3000cP, DN500 four-bladed disk turbine, Stable operation for 5 years, shear stability, No pitting problems.high viscosity polymer anchor blade, 100℃ polymer slurry, Viscosity 30000cP, DN800 Frame Scraping Wall Structure, 3 years of continuous operation, No coking on cylinder wall, No blade deformation.Super-viscous material with screw blade, 60℃ colloidal material, viscosity 80000cP, DN1000 double screw blade, run for 2 years material mixing evenly, no stratification phenomenon. Selection error cases, Wrong choice of propeller blade for high viscosity slurry, Uneven mixing of materials, After 3 months of operation, the reaction efficiency decreased by 50%.After replacement of anchor blades, the equipment has been running steadily for 3 years.

V. Blade installation points

Propelling type generally adopts jacking type installation, and the blade is placed at the position of 0.5-1 times the tank diameter below the liquid surface;Turbine type installation in the middle of the tank, play a strong shear effect;The anchor blades are close to the tank wall, and the wall clearance is controlled within 50mm;The wall clearance of ribbon blade should be controlled within 30 mm.The turbine blades are kept 0.5-1 times the tank diameter from the tank bottom.The installation spacing is not up to standard, and it is easy to inhale air or deposit at the bottom of the material.

Six, five steps to choose pit avoidance points

Pit avoidance 1: Propelling blades are selected for high viscosity conditions.Medium viscosity ≥5000cP using propeller blades, uneven mixing of materials, reaction efficiency decreased by 50%.Anchor or ribbon blades are preferred for high viscosity conditions. Pit avoidance 2: blade welding complete without annealing.A large amount of residual stress will remain without annealing, and the weld will crack in a short time.When purchasing, it is clearly required to heat at 550-600℃ for 1-2 hours to relieve stress annealing after welding. Pit 3: Blade material does not conform to drawings.Drawing Requirements TA2 Titanium, Supply replacement Q235 titanium lining component, late liner shedding, 1-2 Annual component failure.Check MTC certificate for acceptance, confirm material designation and multilayer thickness. Pit avoidance 4: Blade running speed exceeds standard.Speed exceeds design parameters, equipment vibration intensifies and bearings are burned.Operating vibration value ≤3.5mm/s is in good condition, vibration ≥7.1mm/s needs to be shut down for troubleshooting. Avoidance pit 5: The blade installation position is not standardized.Blade distance to liquid level or tank bottom spacing out of specification, Easy to inhale gases, material settling, The positioning shall be in strict accordance with the installation specifications.

VII. Shaanxi Qianyi Tuoda Supporting Technical Services

Shaanxi Tenda, located in Baoji China Titanium Valley, is deeply cultivatingTitanium non-standard equipmentManufacturing, providing three supporting services.The first one-to-one selection consultation, provide a medium, viscosity, tank specification parameters, Technicians quickly issue blades, power, Speed PackageThe second spot reserve, propulsion, turbine, anchor, ribbon type four titanium blade spot sufficient;The third free MTC material review, the customer submits the material certificate, the engineer 30 minutes to verify the authenticity of the material.Contact: 15909236031 / 0917-3557966, official website:http://www.sxqytd.com/

titanium stirrerThree core blade selection, The viscosity of the medium determines the blade type, Stress relief annealing must be done after welding, The blade installation position strictly follows the specifications.Misselection of blades will result in poor mixing of materials, reduced reaction efficiency and early damage of blades. Want to learn moretitanium stirrerRelated technical content, you can consult the station article: 

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《titanium stirrerTroubleshooting Guidehttp://www.sxqytd.com/index.php/new/index/id/185.html

Technical reference standards in this paper: HG/T 20569-2013, JB/T 4725-2015, API 610-2010.Updated: August 6, 2026. disclaimer, blade selection in this paper, Installation related data are for technical reference only, The actual effect depends on the viscosity of the medium, temperature, Field operation and maintenance factors, Formal project selection is subject to written technical confirmation by both parties.