Instructions to polish stainless steel by hand Affordable stainless steel workshops nearby

Polishing process and skills

Polishing is a very important process in mold manufacturing. With the widespread use of plastic products, the requirements for the appearance quality of plastic products are increasingly higher.

The quality of stainless steel products with beautiful surfaces will increase product value. Therefore, the surface polishing quality of plastic molds also needs to be improved. Molds with mirror surfaces and high gloss surfaces have higher requirements for mold surface roughness, so polishing requirements are also higher.

Processing as required for stainless steel polishing.

Polishing not only increases the beauty of the workpiece, but also improves the corrosion resistance and wear resistance of the material surface. It can also facilitate subsequent injection molding processes, such as making plastic products malleable and reducing production injection molding cycles. The polishing methods commonly used today are as follows:

Mechanical polishing for difficult products

Mechanical polishing is a polishing method that relies on the cutting and plastic deformation of the material surface to remove protrusions that are polished to obtain a smooth surface. Generally, strips of oil stone and wool are used. Use a wheel, sandpaper...

Mainly manual operation is used. For special parts such as the surface of the rotating body, auxiliary tools such as turntables can be used. For high surface quality requirements, ultra-precision polishing methods can be used.

TinTa stainless steel polishing service workshop .

Ultra-precision polishing is the use of special abrasive tools, which are tightly pressed on the processed surface of the workpiece in a polishing solution containing abrasive particles to rotate at high speed.

Using this technology, a surface roughness of Ra0.008μm, the highest among various polishing methods, can be achieved. Optical lens molds often use this method.

Basic process of mechanical polishing

The basic process of mechanical polishing is to have high-quality polishing tools and auxiliary products such as grinding wheels, sandpaper and diamond paste to obtain high-quality polishing results.

The choice of polishing process depends on the surface condition after pre-treatment, such as machining, EDM, grinding, etc. The general process of mechanical polishing is as follows.

Surface after rough polishing, milling, spark polishing, grinding...

Can be polished with a rotary surface polisher or an ultrasonic grinder at a speed of 35 000-40 000 rpm.

The commonly used method is to remove the white spark layer using a wheel with a diameter of Φ3mm and WA # 400. Then, grind the grinding wheel manually, and the grinding wheel strips are added with kerosene as an agent. lubricant or coolant.

The general order of use is #180 ~ #240 ~ #320 ~ #400 ~ #600 ~ #800 ~ #1000. Grinding wheel polishing method, this operation is the most important and difficult operation, according to the parameters Different techniques of processing products, the angle position is about 70 degrees corresponding to cross polishing.

The most ideal round-trip range is about 40 mm ~ 70 mm. The behavior of grinding wheels also varies depending on the material of the product being processed. Many mold makers choose to start with #400 to save time.

Precision polishing mainly uses sandpaper and kerosene .

After the grinding wheel operation is finished, sandpaper is applied. When using sandpaper, pay attention to the rounded edges, rounded corners and orange peel of the mold core. Therefore, the better the oil stone production process.

Focus on polishing with sandpaper. Sandpaper is combined with a hardwood stick to grind at an angle of about 70 degrees like grinding a whetstone, and the number of grindings on one side is about 10 to 15 times.

If the grinding time is too long, the sandpaper's grinding force will be reduced, thereby causing an uneven machined surface (this is also one of the causes of orange peel).

Generally, bamboo chips are used for sanding

In fact, it is ideal to use a low-resilience wooden bar or a low-hardness aluminum bar to grind at an angle of about 45 degrees. Rubber or highly elastic materials cannot be used for grinding surfaces, and sharp corners cannot be used for shapes that cannot be ground at a 45-degree angle.

The sandpaper quantity is: #220 ~ #320 ~ #400 ~ #600 ~ #800 ~ #1000 ~ #1200 ~ #1500. In fact, #1500 sandpaper only uses suitable die steel for hardening (above 52HRC), do not use pre-hardened steel, as it may cause burns to the surface of the pre-hardened steel.

Finishing polishing mainly uses diamond abrasive pastes.

If the polishing cloth wheel is mixed with diamond abrasive powder or abrasive paste for polishing, the normal polishing order is 9μm (#1800) ~ 6μm (#3000) ~ 3μm (#8000).

9μm diamond abrasive paste and polishing cloth can be used to remove hair-like wear marks left by #1200 and #1500 sandpaper. Then use adhesive felt and diamond paste to polish, the order is 1μm (#14000) ~ 1/2μm (#60000) ~ 1/4μm (#100000).

Polishing processes with precision requirements of 1μm or more (including 1μm) can be performed in a clean polishing room in the mold processing workshop.

Focus on polishing with sandpaper

For more precise polishing, an absolutely clean space is needed. Dust, smoke, dandruff and saliva can all scratch the highly precision polished surface obtained after many hours of work.

See the next part of the above content for instructions on how to polish stainless steel

But related keywords on google search

Tags: instructions on how to polish stainless steel by hand, instructions on how to polish stainless steel doors yourself. Instruction book for polishing stainless steel with chemicals, ways to polish stainless steel beautifully and without rust.

To use stainless steel polishing solution, you need expertise and instructions for beautiful, high-quality stainless steel polishing. Using stainless steel polishing tools depends on the product. The most professional way to polish mirror stainless steel.

Technique with beautiful stainless steel mirror polishing

Learn how to polish stainless steel corners with a specialized machine, and how to polish stainless steel with simple sandpaper. Cheap, cost-effective stainless steel polishing techniques, high-quality stainless steel electrochemical polishing techniques.

Choose stainless steel polishing materials, how to polish stainless steel, fastest way to polish stainless steel. Find ways to polish burned stainless steel pots and polish stainless steel pots and pans. Ways to polish stainless steel at home

Ways to polish stainless steel faucets, stainless steel polishing cloth, stainless steel polishing video. Materials for stainless steel polishing felt, stainless steel polishing sponge, where to polish stainless steel.

Products and materials for the stainless steel mechanical industry .

Receive a quote and process stainless steel upon request in Ho Chi Minh City .

Related items you are interested in laser cutting stainless steel .
Content you need to process stainless steel according to the request to receive fiber laser cutting of stainless steel . Cheap laser cutting
stainless steel mechanical processing workshop.