What kind of rubber plate is used for belt roller lagging rubber?

There are two conventional ways of belt drum lagging, the first is drum hot casting rubber, and the second is drum cold lagging. The drum hot-cast rubber is a hot vulcanization method, the disassembled drum is transported to the vulcanization manufacturer, the manufacturer will polish the surface of the drum and then cover the surface with a layer of rubber and place it in the vulcanization tank for heating and pressure vulcanization, so as to realize the drum lagging glue. Due to the cumbersome operation and great limitations, it was gradually replaced by drum cold lagging adhesive.

Drum lagging sheet.

Drum cold lagging in the selection of materials in the degree of freedom, after understanding the operation process, can be their own lagging, its process is simple, according to the needs of the work to choose targeted materials, the operation speed is fast.

According to different working environments, the selection of drum lagging RIT rubber plate will be different, and the commonly used working surface are flat, diamond-shaped, and ceramic rubber plates. The adhesive surface has an Inmate CN semi-vulcanized layer. During bonding, vulcanization reaction occurs with glue S313 to obtain higher bonding strength and achieve the effect of integration, and the strength can be the same level as hot vulcanization.

Belt roller lagging can be used diamond-shaped rubber plate, flat rubber plate, herringbone rubber plate, strip rubber plate, ceramic rubber plate and other rubber plates can be used for drum cold lagging. The picture below is one of the types of drum lagging rubber sheets: ceramic rubber sheets.

Ceramic rubber sheet.

Belt pulley lagging can be used rubber sheet, ceramic rubber sheet, polyurethane rubber sheet and other drum lagging rubber sheet.

The common one is ceramic rubber sheet, which is made of ceramic blocks with 95% content of cer at 5mm intervals and high-strength rubber. Common specifications are; ZJ-RCK-1415 or 1615 and other specifications. The width is 500mm as the common width, and the length is the constant length as the drum width.

Common rubber sheets generally have two forms: flat rubber sheets and diamond-shaped rubber sheets, and uncommon rubber sheets include strip-shaped rubber sheets, herringbone rubber sheets and other rubber sheets.

Polyurethane rubber sheet is generally made of polyurethane rubber + CN adhesive layer composite rubber sheet. The surface is generally diamond-shaped.

<> drum package number call side glue with cold potato rubber viscose SA3000 type.

Drum cold lagging needs to be used:

1. Cold vulcanized adhesive.

2. Metal chain cloth treatment agent.

3. Cleaning agent.

4. Sealing glue (T2 composite glue or rubber repair agent).

Pulley lagging is an important component and component of the belt conveying and transportation system, and the pulley after lagging can effectively improve the operation of the conveying system, protect the metal drum from wear, and improve the operation efficiency of materials. At present, the more commonly used drum lagging method is cold vulcanization drum lagging method, which does not require long-distance transportation and does not require large-scale vulcanization equipment, and can be constructed on site, which is quite simple and fast. This article introduces the on-site preparation, operation process and precautions of drum lagging on site.

Preparation:

Materials: Adhesive SK313, Cleaning Agent SK353, Metal Treatment Agent SK363, Rubber Sheet, Rubber Repair Agent SK358.

Tools: angle grinder, tungsten carbide grinding disc, rubber knife, compacting roller, rubber hammer.

Drum cold vulcanization lagging operation process:

1.Burnish. Because there are many dirt, dust, grease, water, rust and other organic or inorganic pollutants on the metal surface, it affects the wetting of the glue.

In order to improve the bonding strength, it is necessary to roughen, clean and activate the surface of the adherent through mechanical, physical, chemical and other methods, and change the surface properties, so as to facilitate the good infiltration of the glue, firm bonding, and improve the durability and service life of the bond. After surface treatment, the metal surface can be turned into a sticky surface with high activity and high effective area.

2.Cleaning. After sanding, there are many dirt, dust, grease, water, rust and other organic or inorganic contaminants on the surface, which affect the wetting of the adhesive.

It is necessary to use the cleaning agent SK353 to remove the surface dirt and deeply clean the entire drum surface to prevent various impurities from affecting the glue bonding effect.

3.Transition. After cleaning, use a brush to evenly and quickly apply a layer of metal treatment agent SK363, which is required to be evenly and completely, without leakage, and let it dry completely for about one hour.

4.Gluing. The two components of the adhesive SK313 are mixed and stirred, and a part of the glue can be taken according to 100:

Mix the ratio of 4 in the container. After the preparation of the glue must be used in a timely manner, not for a long time. The prepared adhesive is evenly applied to the metal surface of the drum and allowed to dry completely to the extent that it no longer adheres to the back of the fingers, and the drying time is about 15-45 minutes.

After the first layer of glue is completely dry, apply the second layer of adhesive, and when the second layer is dry to a slight stickiness (test with the back of your hand), you can carry out the final bonding of the surface (if the second layer is too dry, you need to apply another layer).

5.Fit. Determine the bonding baseline on the surface of the roller:

After brushing the glue for the second time, find the benchmark for glue plate pasting on the surface of the roller. Cover the semi-vulcanized layer of the rubber sheet with a clean plastic film, and start pasting the rubber sheet on the surface of the drum by tearing the plastic film about 50 mm wide based on the reference line found on the drum.

Cold vulcanization drum lagging technology has been widely used in the belt conveyor transportation system of mines, ports, power plants, iron and steel plants, cement plants, coal mines and other industries, and can be constructed according to the actual situation of the site to achieve satisfactory results.

There are several ways to lagging the pulley.

1. On-site cold lagging: It is a more popular drum lagging method, and the commonly used materials are SA3000 cold adhesive and supporting metal treatment agent and ceramic rubber plate or diamond-shaped rubber plate, which can complete on-site cold lagging.

2. Tile lagging is mainly used to make hoist drum lagging mainly and is also a more common one at present, which needs to be divided into several equal blocks on average according to the size of the drum, and lagging is carried out by hot casting rubber.

3. Hot-cast glue: It is a kind of old-fashioned glue covering, but the drum needs to be removed and transported to the manufacturer who makes hot-cast rubber.

Ordinary belts are not the same as industrial belts, if it is an ordinary belt, you can use 502 directly, if it is an industrial belt, a belt used for conveyors, then you have to look at the glue I talked about next.

With the development of new rapid repair processes, there are many belt bonding repair products with different characteristics and functions on the market, such as rubber repair agents, cold vulcanized glues, and CN layer repair strips (repair sheets). This article compares the above-mentioned products and their on-site operation experience in combination with the actual situation, so that you can choose effective repair methods for different damage conditions of belts.

First, there are scratches and small potholes in the beltThe surface of the belt is partially worn and defected, and the rubber repair agent can be used to fill the trowel as a quick repair method. This method requires less material and is easy to operate. The rubber repair agent can be cured in 30-90 minutes, and it is ready to use.

2. Large-area, long-distance scratches

The repair of belt scratches is mainly based on the cold adhesive repair of the repair strip. When repairing, the damaged part is first polished, cleaned with cleaning agent, and then coated with cold vulcanized glue, the second layer is painted after the first coat is dry, and the second layer of glue is half dried when the CN layer repair strip is pasted, and finally compacted with rollers. The abrasion-resistant and flexible strip combined with the high-strength bonding of the cold vulcanized glue can protect the damaged parts of the belt.

For large-area repairs, it is recommended to use a repair top mask.

3. Belt penetration and tearingUse rubber repair agent to fill the penetrating part, and then the upper and lower parts are treated in the way of attaching the repair strip, first polish the repair place, clean it with cleaning agent, paste the repair strip below the belt of the penetrating part after drying, then fill the penetrating part with rubber repair agent, and finally attach the repair strip above the belt at the tear part.

In short, it is necessary to choose the right bonding material and meticulous operation techniques to achieve the desired effect.

I don't know what kind of belt you're talking about, if it's an ordinary belt, 502 should be bondable. If it is an industrial transport belt, it is necessary to use a special glue for belt bonding to bond.

At present, most of the commonly used industrial belt glues are cold vulcanized glue, which is relatively easy and quick to operate, and the bonding performance can also meet the requirements of belt bonding. It is especially suitable for the construction requirements of the fast-paced modern society.

Relatively speaking, more cold-adhesive glue is used, most of which are imported glue, like some glues imported from Germany, such as two-component glue such as SK313, which has a relatively faster curing speed and stronger bonding performance. It is better to use it with RIT belt repair strips.

The blue semi-vulcanized layer of the repair strip can form a vulcanization reaction with the cold vulcanized glue to ensure the full integration between the repair strip and the belt, ensure the bonding continuity after repair, and not easy to open the glue.

I don't know what kind of belt the landlord is talking about, let's talk about industrial belts here.

In the process of transporting materials, the opening of the belt is mostly caused by the fact that the joint part is not firm or the joint strength cannot meet the on-site transportation requirements.

In terms of treatment, the joint is generally re-processed, and the simple and easy-to-operate cold vulcanized joint is used for treatment, and the operation can be completed by using cold vulcanized glue with RIT belt repair strip with semi-vulcanized layer during on-site operation. Pretty simple.

When the on-site joint, it is necessary to use a layering tool to carry out stepped layering treatment on the part of the belt that needs to be jointed, and then use an angle grinder with tungsten steel disc to polish the belt;

After the grinding residue is cleaned, use cleaning agent to brush the layered part to wash off the residual grease on the surface of the belt;

Pour the curing agent of SK313 into the glue main agent for mixing and stirring, and then paint SK313 on each layered part, and the adhesive surface of the repair strip should also be coated with a layer of glue;

When the glue is slightly sticky to the back of the finger, the repair strip is attached to the seam for sealing, and the compaction roller can be used to roll it firmly.

It can be glued with 502 glue and can be bought in supermarkets in general.

Use of 502 glue:

1. Clean the surface of the adhered object before use, remove the dust, oil, rust, etc. on the surface, and when bonding the metal, it is best to grind it roughly, and activate the surface of PE, PP and other plastics.

2. Open the front cover of the glue bottle, and gently buckle the tip with your fingers so that there is no residual liquid, and then cut out the hole with scissors.

3. Drop a small drop of this glue on the surface of the adherent, immediately bond, and keep it until it hardens, of course, the bonding area should not be too large.

4. Wipe the glue bottle clean after use, cover it tightly, and store it in a cool and dry place or refrigerated.

Belt glue is usually glued with the function of sticking leather, and it can be bonded.

The belt is open and fast-bonding in a small area can be bonded with YH-818 glue.

The most important point of drum lagging is the material, the adhesive used to bond the rubber sheet, the material tools used in the drum lagging are: low-speed angle grinder, cleaning agent, metal treatment agent, cold vulcanization adhesive SK313 and curing agent UT-R40. With these, it is not difficult to lagging the roller.

1.Grinding and cleaning

Use an angle grinder to polish the surface of the drum until it is rough and rust-free, then clean the surface stains with a cleaning agent and wait for it to dry.

2.Apply a metal primer

Apply a layer of metal primer to the surface of the drum and apply it evenly.

3.Mix the glue and paint

The cold vulcanized adhesive SK313 and the curing agent UT-R40 are mixed and mixed according to a certain proportion, the first pass of the mixture is applied on the surface of the drum and wait for drying, the second pass of the mixture is applied after drying, and a layer of mixture is also applied on the rubber sheet. (Rubber sheet with semi-vulcanized layer is painted once, without it is painted twice).

4.Fit.

When the back of the hand is slightly sticky twice, you can start pasting, and gradually advance when pasting, and roll back and forth with compaction rollers to exhaust the internal air so that the adhesive surface fits completely.

The strength, efficiency and life of cold lagging are better than other lagging methods, economical is one thing, the glue process is also very good, the cold vulcanization adhesive and curing agent are mixed and the curing speed is fast, the bonding strength is large, because the metal treatment agent is brushed, the bonding surface is also relatively wide, in general, the cold lagging process is the best efficiency and strength of a lagging method I have ever seen.

For drum cold lagging, we use SK313

Chemlock adhesive in the United States.

Drum lagging is the key link to ensure the safe and stable operation of the conveying system, the rubber plate is bonded to the surface of the driving drum by using cold vulcanization bonding, so as to enhance the friction between the drum and the belt, protect the metal surface of the drum from corrosion, and prevent the belt from slipping and deviation in the process of high-speed operation.

Brush the metal primer when rolling the drum lagging glue.

The pulley lagging can be applied on site, the operation is simple and easy, the bonding strength is 5-7 times that of the traditional cast rubber, creep resistance, and no degumming. In addition, the rubber plate has high compactness, good wear resistance and elasticity, and long service life. Long-term operation is possible even at temperatures of -20-85.

The materials involved in the drum lagging include: two-component cold adhesive, metal primer, cleaning agent, sealing glue, wear-resistant rubber plate, etc., and it is particularly important to ensure the quality of the drum lagging by using a reasonable way and matching materials according to the working conditions of the site.

Metal primer SK363 is also called metal primer, and many on-site workers call it metal treatment agent. The chemical properties of the metal primer are active, and it can still achieve extremely high adhesion strength when applied to a smooth and dense metal surface, forming a primer film with excellent adhesion performance, and providing bonding support for subsequent application of the hand-milled cold vulcanized adhesive SK313.