Varnish grinding machine

Varnish grinding machines utilize a high-speed rotating grinding disc to drive grinding media, which shears and impacts varnish raw materials, ensuring uniform dispersion of pigment particles. They are used in the pigment dispersion process during paint production to guarantee consistent color and a smooth surface of the paint film.
Selection
When selecting, consider matching the material viscosity with the grinder's power, determine the grinding media size based on particle size requirements, choose the effective volume according to production capacity, inspect the cooling system to prevent overheating, and confirm the material's corrosion resistance to suit the production environment.

Terms

Standards

Instruments

The use of diamond sanding needles can flatten the surface of the grinding wheel, improve the utilization rate of abrasive wheels, and is equipped with a water supply system to support wet grinding and dry grinding. The size of abrasive wheels is about 250 × 30 × 32mm, and the Rotation speed is 1400rpm.

$ 1239.00

Double Tank grinding design, vibration speed 60-1800rpm, discharge particle size up to 5~ 10μm, support dry grinding, wet grinding and low temperature grinding, suitable for heat sensitive materials and minimal liquid nitrogen consumption.

$ 5540.00

The double Tank design is used to achieve high-throughput grinding, the vibration speed is adjustable from 60 to 1800rpm, and the discharge particle size is 5 to 10 μm. It supports dry grinding, wet grinding and low temperature grinding, and effectively protects the molecular structure of heat-sensitive materials.

$ 5697.00

With double Tank grinding and 1-30Hz vibration Frequency adjustment, support low temperature grinding protection heat sensitive material, discharge particle size up to 5~ 10μm, can process more than 10 samples at a time and grinding time only 1-3 minutes.

$ 5660.00

Using double Tank grinding design, vibration speed 60-1800rpm, discharge particle size up to 5~ 10μm, support low temperature grinding protection of heat sensitive materials, a processing of more than 10 samples, grinding time only 1-3 minutes.

$ 5663.00

Using large-screen touch screen operation, intelligent control of grinding time and speed, grinding results are highly repeatability. The dual-Tank design supports high-throughput processing, and the discharge particle size can reach 5~ 10 μm. It is suitable for heat-sensitive materials and consumes very little liquid nitrogen.

$ 5237.00

Double Tank grinding design, vibration speed 60-1800rpm, discharge particle size up to 5~ 10μm, support low temperature grinding protection of heat sensitive materials, processing multiple samples at one time and high Repeatability.

$ 5610.00

Using 60-1800rpm vibration speed, the discharge particle size can reach 5~ 10μm, support dry grinding, wet grinding and low temperature grinding, suitable for heat-sensitive materials and minimal liquid nitrogen consumption, can handle more than 10 samples at a time.

$ 5610.00

With 60-1800R/min vibration speed and 1-30Hz Frequency range, support dry grinding, wet grinding and low temperature grinding, can handle feed ≤ 8mm sample to 5~ 10μm particle size, suitable for thermal materials and low liquid nitrogen consumption.

$ 5665.00

With dry grinding and wet grinding dual test function, friction Frequency four-speed adjustable (21/42/85/106cpm), support 0~ 99999 automatic shutdown, in line with JIS-5071-1 and other standard requirements.

$ 783.00

The three-phase asynchronous motor has high spark-free safety performance, can handle high viscosity materials and work continuously, the grinding medium is 1.6-1 zirconia beads, and the fineness of grinding is good and easy to clean.

$ 1038.00

Single disc design integrated pre-grinding grinding polishing function, support stepless speed regulation 100-1000rpm and four speed regulation, pressure range 35-150N, equipped with electromagnetic clutch locking and automatic cleaning system, smooth and safe operation.

$ 4914.00

Speed range 300 to 1000rpm, equipped with chilled down water pipe and grinding disc flushing function, leak-proof spindle design to improve bearing life, suitable for wet grinding and a variety of sample processing.

$ 1418.00

The three-phase asynchronous motor is safe and spark-free, can handle high viscosity materials and support long-term continuous work, grinding basket volume 1.8L, speed range 0~ 3000rpm/min, to achieve efficient dispersion and refinement of grinding.

$ 3785.00

Double disk system independent control of grinding polishing, stepless speed range of 50~ 1400rpm, cabinet structure is easy to store consumables, equipped with chilled down water pipe to support wet grinding, suitable for a variety of sample processing processes.

$ 3091.00

Articles

Selection of laboratory grinders is based on the fineness requirements of coatings, choosing between ball mills or sand mills.
The selection of a laboratory grinder should be based on the fineness requirements of the coating. A fineness greater than 50 microns indicates coarse dispersion, 10 to 50 microns is considered medium fineness, and less than 10 microns requires high fineness dispersion.
Mill Selection: Grinding Media and Material Fineness Targets
This article introduces how to select appropriate grinding media based on material characteristics and target fineness during the selection of a grinder.
Drop Ball Method of Impact Testing Machine for Evaluating the Impact Resistance of Varnish
This article introduces the use of the falling ball method with an impact testing machine to assess the impact resistance of varnish. The method involves dropping a steel ball of specified weight from a predetermined height onto a test panel coated with varnish to observe whether the coating cracks or peels off, thereby evaluating its impact resistance.
Wet film thickness gauge measures the wet film thickness of varnish.
The wet film thickness gauge is a mechanical tool used to measure the thickness of liquid varnish coatings. It operates by rolling the gauge so that the tips of its teeth contact the substrate and leave marks. The thickness value is then obtained by the operator reading the scale of the first tooth that becomes coated with the varnish.
Method for determining the dynamic viscosity of varnish using a falling ball viscometer
This article introduces a method for measuring the dynamic viscosity of varnish using a falling-ball viscometer. It is based on Stokes' law, which calculates viscosity by measuring the time required for a standard small ball to fall a fixed distance in a vertical glass tube filled with varnish.
Muffle Furnace Ash Test Method for Determination of Inorganic Filler Residues in Varnish
This article introduces the method of using the muffle furnace ash test to determine the residual amount of inorganic fillers in varnish. The inorganic substances in varnish can affect the performance of the coating, making accurate determination of ash content important for quality control.
Pull-off Adhesion Tester for Quantitative Measurement of Varnish Adhesion.
The pull-off adhesion tester quantitatively measures the adhesion strength between a varnish coating and the substrate by vertically pulling off a test column. It is essential to ensure proper substrate preparation, complete curing of the coating, and the use of a suitable adhesive during testing.
Buchholz indentation tester measures the indentation hardness of varnish.
The Buchholz indentation test is a method for measuring the indentation hardness of coatings such as varnishes. It involves applying a specific indenter to the coating surface under a standard load, and after unloading, the length of the residual indentation is measured. A longer length indicates lower hardness.
Visual color comparison method using colorimetric tubes to determine the color phase of varnish.
Colorimetric tube visual colorimetry is a method used to determine the color hue tendency of varnish samples by directly comparing them with a standard color scale using the human eye. During operation, samples and standard liquid columns should be prepared using colorimetric tubes of consistent specifications under standard lighting conditions, and the hue differences should be observed in parallel.
Flash point tester for determination of closed cup flash point of varnish
This article introduces the method for determining the closed-cup flash point of varnish using a flash point tester. The flash point refers to the minimum temperature at which the vapor on the surface of the varnish ignites momentarily when exposed to a flame after heating. It is a crucial indicator for assessing the fire risk during its production, storage, and transportation.
Thermogravimetric Analyzer for Determining the Solid Content of Varnish
The principle of determining the solid content of varnish using a thermogravimetric analyzer is as follows: when the sample is heated, volatile solvents and moisture evaporate, leading to a decrease in mass, while the remaining solid mass stabilizes. The solid content is calculated by comparing the initial and final mass ratios.
Adhesion Tester Pull-Off Method for Determining Adhesion Strength of Varnish
This article introduces the test method for measuring the adhesion strength of varnish using the pull-off method. It involves adhering test cylinders to the coating and substrate with adhesive, then vertically pulling them apart with an instrument to record the maximum pulling force and calculate the adhesion strength.
Key steps for measuring the efflux time of varnish using a viscosity cup method
This article introduces the method for measuring the outflow time of varnish using a viscosity cup. The principle is based on Poiseuille's law, where viscosity is estimated by recording the time it takes for the liquid to completely flow out from the small hole at the bottom of the cup—longer times typically indicate higher viscosity.
Application of Gloss Meter in Gloss Measurement of Varnish Coatings
A gloss meter is used to measure the gloss of varnish coatings by detecting surface-reflected light to quantitatively assess the appearance of the coating. The measurement is based on the principle of specular reflection of light, commonly employing angles such as 20°, 60°, and 85° to correspond to different gloss ranges, and follows standard formulas for calculation.
The pendulum hardness tester tests the scratch resistance limit of varnish.
The pendulum hardness tester measures the hardness of varnish by observing the attenuation of the pendulum's swing on the coating surface, with faster attenuation indicating a softer coating. The scratch resistance of varnish depends not only on hardness but also on elasticity and toughness. Hardness testing sets the basic threshold for scratch resistance.