Grinding plate scraper manufacturer

Grinding plate scraper manufacturerAccuracy guarantee, manual scraping and grinding process for Dalian grinding plates to maintain accuracy, repair scraping and grinding of cast iron grinding plates;

The maintenance of the decreased accuracy of the grinding plate is essentially to restore the flatness and micro geometric accuracy of its working surface. According to the current level of technology, there are two commonly used and effective maintenance methods:

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Method 1: "Three Block Mutual Study" Method (Traditional Classic)

This is currently a commonly used, economical, and precision controlled maintenance method, suitable for cast iron grinding plates.

The operation steps are as follows:

1. Preparation stage

Prepare three grinding plates of the same material and specifications, numbered A, B, and C, clean them thoroughly and remove burrs and oil stains.

2. Rough grinding stage

Use coarse sand (such as W20W14) for pairwise grinding, in the following order:

A?B、A? C、B? C， Each grinding time is equal, rotate 4 times, and then wipe clean for inspection.

3. Precision research stage

After the flatness error is reduced, use fine sand (such as W7W3.5) to continue the research until the flatness requirement of △ 12 or above is reached (i.e. flatness error ≤ 3 μ m/300mm).

4. Verification phase

Use a 0-level knife edge ruler and transparency method to detect flatness and ensure that there is no excessive transparency; If necessary, retest with an electronic level.

>Advantages: Low cost, high precision, repairable to factory level

Attention: The process is time-consuming and requires high experience from operators

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Method 2: Reference Plate Grinding Scraping Method

Suitable for repairing a single tablet, but requires a larger standard tablet with higher precision.

Operation process:

1. Compare the color of the repaired flat plate with the reference flat plate and observe the contact spots;

2. Use a shovel to manually scrape the high points and gradually increase the contact rate;

3. Repeat the research → scraping → inspection until the contact spots are evenly distributed (≥ 20 points within 25 × 25mm);

4. Finally, lightly grind and polish with fine sand and kerosene to eliminate burrs.

>Advantages: Suitable for single piece repair, intuitive and controllable

Disadvantages: Dependence on benchmark tablets, high repair costs

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Not recommended approach:

-Directly polishing with sandpaper, file, or angle grinder will damage the surface sand embedding structure and render it useless;

-Self heating or tapping can easily cause deformation or stress release, resulting in irreversible decrease in accuracy;

-Long term lack of maintenance → Surface rust and deepening of pits, doubling the difficulty of repair

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Suggestions after repair:

-Send the measurement station for accuracy calibration once a year;

-Clean and apply oil after use to avoid rusting;

-Store in a constant temperature and dry environment to avoid deformation due to temperature differences;

-Avoid heavy pressure, impact, and magnetic field influence

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Grinding plate scraper manufacturerIn summary:

>The "three block mutual research" method is currently a reliable and economical method for repairing the accuracy of grinding plates. Combined with fine sand rotation grinding, it can restore the accuracy to above △ 12 level and is suitable for most cast iron grinding plate maintenance scenarios.

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If you have specific tablet specifications (such as 300 × 300, 600 × 600) or precision level (0 level, 1 level) requirements, I can customize a repair process card for you.