Steel scraper Rod

The steel drawdown bar is a coating tool consisting of a stainless steel rod tightly wound with steel wire. When rotated, it forms a smooth wet film on the substrate. It is used in laboratories to prepare coating samples and measure properties such as paint hiding power and pigment paste fineness.
Selection
When selecting a steel coating applicator, consider the wire diameter specification corresponding to the wet film thickness, typically ranging from 25 to 200 μm. The rod length should match the substrate width, with the wire wound uniformly and without gaps. Stainless steel material ensures corrosion resistance, and the handle design should align with ergonomic operation habits.

Terms

Standards

Instruments

Using removable scraper and vacuum adsorption system, Spreader accuracy +/- 0.003mm, Spreader rate 5~ 180mm/s, heating temperature up to 180 ℃, improve film Stability and uniformity.

$ 7496.00

Wire-wound design can be prepared 38.9μm wet-film, stainless steel material to ensure durability, suitable for a variety of liquid materials Spreader, application width up to 300mm.

$ 167.00

Imported wire Rod to achieve 1 μ m High Accuracy Spreader, scraper Spreader Film thickness range of 0~ 5000 μ m, support 5~ 200mm/s stepless speed control and vacuum adsorption fixation, effectively improve film conformity and operation convenience.

$ 3494.00

The kit can realize automatic grinding fineness Gauge operation, improve test Repeatability, suitable for standard scraper fineness Meter supporting use, simplify the experimental process.

$ 1623.00

Wire-wound design, film thickness 120 microns, total length 37.5cm, effective application width 25.5cm, stainless steel material to ensure durability and uniform Spreader.

$ 173.00

High-quality alloy steel scraper accuracy of +/- 2μm, magnetic suction design for easy cleaning and replacement, Film thickness adjustment range of 0-4500μm to meet the needs of different materials Moulding, acid and alkali corrosion bracket to ensure long-term stable use.

$ 315.00

Adopt high-quality alloy steel scraper, Hardness and wear resistance and corrosion resistance; Magnetic suction design for quick replacement and cleaning; Film Film thickness 0~ 4500 μ m free adjustment, resolution up to 10 μ m, error only +/- 2 μ m.

$ 291.00

The extrusion production process ensures uniform coating, with a wet film thickness of 60μm meeting the demands of precise experiments. The 304 stainless steel material is durable and easy to clean, making it suitable for diverse coating performance tests.

$ 178.00

High-quality alloy steel scraper, Hardness and wear resistance and corrosion resistance, Film thickness adjustment range 0-4500 μ m, magnetic suction design for quick replacement and cleaning, differential head accuracy of +/- 2 μ m to ensure uniform and stable film.

$ 251.00

A wet film with a film thickness of 50~ 675 μ m was prepared by using a coating scraper, and the sag property was observed when placed vertically. The maximum thickness without sag was expressed, which was suitable for Paints testing.

$ 411.00

Using wear-resistant stainless steel material, long service life, cleaning is not blocked, wet film thickness 270μm, Spreader width 300mm, suitable for accurate Spreader needs.

$ 178.00

Made of wear-resistant and corrosion-resistant alloy steel, with a Hardness of 52 +/- 2HRC, it has upper and lower working surfaces to improve work efficiency and tool life.

$ 98.00

Adopt removable scraper for easy cleaning and replacement, with bracket design to improve running Stability; Spreader accuracy of +/- 0.003mm, Film thickness range of 0~ 10mm adjustable, effective Spreader area of 400 * 300mm, through stepless speed control to ensure uniform Spreader.

$ 2333.00

With bar and Drawdown blade two Spreader mode, using clamshell Drawdown blade head and new bar Installation method, easy to clean. Spreader speed and length can be freely adjusted, film thickness control accuracy is high, suitable for Glass, cardboard and other substrates.

$ 2978.00

Spreader width 250mm, wet film thickness adjustment range 0-4500μm, scraper error +/- 2μm, High Accuracy Differential Head Control to meet the needs of various materials Moulding.

$ 340.00

Articles

Laboratory rod coater for submicron wet film preparation of photoresist.
This article introduces the process of using a laboratory bar coater to prepare submicron wet films of photoresist.
Selection of Wear Testing Machine: Types of Abrasion Wheels and Load Setting Methods
The test results of the wear testing machine primarily depend on the type of grinding wheel and the load setting. Grinding wheels include rubber wheels, abrasive wheels, wire wheels, and fiber wheels, among others. The selection should be matched based on the material characteristics and the actual wear scenario.
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.
Automatic Potentiometric Titration for Rapid Detection of Chloride Ion Content in Cement
This article introduces a method for rapidly detecting the chloride ion content in cement using an automatic potentiometric titrator. Excessive chloride ions can corrode steel reinforcement and affect the lifespan of concrete, making accurate detection crucial.
Actual Coating Thickness Deviation of Stainless Steel Wire Rod Coaters at Different Slurry Solid Contents
This article analyzes the actual coating thickness deviation of stainless steel wire rod coaters under different slurry solid contents. The study finds that the solid content of the slurry affects its viscosity and flowability, leading to deviations in the actual coating thickness from the theoretical value.
Magnetic thickness gauge measures the thickness of coatings on steel surfaces.
Magnetic thickness gauges are used to measure the thickness of non-magnetic coatings on ferromagnetic substrates such as steel, based on the principles of magnetic induction or changes in magnetic attraction. Prior to use, calibration should be performed according to relevant standards, and attention should be paid to factors such as substrate characteristics, workpiece shape, and surface conditions that may affect the measurements.
Operation Specification for Determining the Softening Point of Resin Using the Ring-and-Ball Apparatus
This article introduces the standard procedure for determining the softening point of resins using the ring-and-ball method. The softening point is a critical indicator for evaluating the thermal properties of resins. During testing, the resin is heated until it deforms under the weight of a steel ball to a specified distance, and the corresponding temperature is recorded.
How to Choose Between the Ring and Ball Method and the Cup and Ball Method for Softening Point Testers? Read This and Stop Worrying
This article introduces two main methods for determining the softening point of materials: the ring-and-ball method and the cup-and-ball method. The ring-and-ball method is more widely used and is suitable for materials such as asphalt. It involves measuring the temperature at which a steel ball causes the sample to sink. The cup-and-ball method is often used for specific resins or wax products, relying on the flow of the sample or the penetration of a steel ball to determine the endpoint.
The difference between a wire bar coater and a gap-type wet film applicator.
The wire-wound drawdown bar directly quantifies the coating through the gap between wires, making it suitable for thin coating preparation with high precision, particularly for low-viscosity fluids. In contrast, the gap-type wet film applicator indirectly controls film thickness through the groove depth, with the actual coating thickness significantly influenced by material properties, making it more suitable for high-viscosity coatings and thick film preparation.
Wire rod Applicator: Principles, Applications, and Selection Guide - A Precision Coating Tool
This article provides a detailed introduction to the working principles of a Wire rod Applicator, including the mechanism by which it controls wet film thickness through the gap between stainless steel wires. It elaborates on its wide range of applications in fields such as coatings, inks, and lithium batteries, and summarizes its technical advantages, including precise control and ease of operation.