aluminum casting rtv-2 silicone rubber,tyre mould manufacturing
Applications of aluminum casting rtv-2 silicone rubber,tyre mould manufacturing:
RTV-2 silicone rubber is primarily intended for aluminum casting,tyre or tire mould manufacturing,steel tire mold, car tire mold,segmented tire mold,heavy tire molds,solid tire molds,tire retreading mold,TBR tire mold,PCR tire mold,OTR tire mold,radial car tire mold,adjustable mold cavity,cone type of collapsible mould,inclined plane type of coll-apsible mould,radial tyre mould,etc.
Advantages of aluminum casting rtv-2 silicone rubber,tyre mould manufacturing:
*low shrinkage (less than 0.1% )
*high tensile and tear strength with high reproduction times
*easy for operation (mixing ratio at 1:1)
*very good flow and easy for pouring operation
*Fast and non-shrink cure at room temperature which can be accelerated considerably by the application of heat
Standard technical data sheet of aluminum casting rtv-2 silicone rubber,tyre mould manufacturing:
Model | HY-E610 | HY-E615 | HY-E620 |
|
| Color | Translucent | Translucent | Translucent |
|
| Mixing ratio (%) | 1:1 | 1:1 | 1:1 |
|
| Pot life (mins,under 25ºC) | 20-40 | 20-40 | 20-40 |
| Curing time(hrs,under 25ºC ) | 4-5(hrs under 25ºC);20-30 (mins under 60ºC) | 4-5(hrs under 25ºC);20-30 (mins under 60ºC) | 4-5(hrs under 25ºC);20-30 (mins under 60ºC) |
| Hardness ( Shore A ) | 10±2 | 15±2 | 20±2 |
| Tensile-strength (kN/m) | 4.0±0.5 | 4.5±1.0 | 6.0±1.0 |
| Tear-strength (kN/m) | 12±5 | 14±5 | 23±5 |
| Viscosity(After A/B mixed ,mPa.s) | 3500±1000 | 3500±1000 | 6000±1500 |
| Shrinkagerate (%) | ≤0.1% | ≤0.1% | ≤0.1% |
| Elongation(%) | 400% | 400% | 400% |
Operation instruction for how to make tyre mold :
1. Preparing an original tyre mold (make sure the original mold perfect ,smooth and clear )
2.Brush an layer of release agent on the surface of original mold and dry it with airgun ,surranding the original mold with iron frame,pls remember to deal with release agent on the inside part of frame too .
3,Mix silicone rubber part A with catalyst part B ,(Notes:Stir part A and Part B evenly , otherwise the silicone will be partially cured ,which will effect the shelf life of silicone mold and reduce the copy time ,even cause the mold can't be used .
4.De-air process :Put the mixture into the vaccum machine for de-air processing after mix the two part evenly ,those process should not take too long ,normall will be in 10 minutes , if more than 10 minutes the two part will react into an incured mold , so the silicone will be difficult to pour , thus the material will be wasted
5.Brushing a layer of silicone on the surface of the orignal mold carefully without any bubble , Pouring the mixture into the frame around a point ,shake the frame to avoide some bubbles .
6,Waiting 90 to 120 minutes till the silicone become cured ,pouring the mixed gypsum water into the rest of the frame till full .
Notes: 1) The percentage added of catalyst should based on the temperature , if the temperature is high , reduce the percentage of catalyst . If add too much catalyst , the mold will become easy to broken ; if added not enough catalyst , the operation time will be very long .
2)we do not suggest add any silicone oil in case of the change of silicone property
3)In order to show the best performance of silicone mold , we suggest to keep the silicone mold in 24 hours before put into production
7.After 6 to 8 hours ,the silicone mold will cured totally . Demould the silicone , you will get a piece of silicone tyre mold .
8.Surranding the silicone mold with four steel board ,set it into the frame for making the tyre mold
9.Pouring the mixed gypsum into the frame ,wait till the gysum almost cured ,set an small wooden square in the two side of the gypsum mold , which used as an button for easier operation
10.Set the steel disc onto the tread groove of the finished gypsum mold
11.Make 6 to 8 gypsum mold by the same way and surrand those mold into an circle ,put some sawn wood in the circle and making the tyre mold
12.Set the gypsum mold made before around the ourside circle of the tyre mold ,put the gypsum mold and outer mold on the steel board ,heat the gypsum under 600 centigrade and pouring the aluminum mixture ,wait till cured
13.Set the finished aluminum tyre mold on the correcting tyre rim machine ,make sure it's the standard tyre mold .
14.Then the mold finished
Our services:
1.Various range of export trading forms: FOB,CFR,CIF,DDU.
2.Free sample by UPS to your home, goods delivery to your nearest port by sea or by air.
3.To help you reduce the customs clearance fees, we can offer all kinds of Certificate of Origin related to different countries including CO, FORMA,FORME,FORMF,etc.
We are manufacturer spcializing in silicon rubber material, such as silicone gel, pad printing silicon, RTV-2 silicone rubber, HTV, RTV-2 room temperature sulfurated silicon rubber, silicon, shoe molding silicon, silicon rubber, manul molding silicon, liquid silicon rubber, LSR, pad printing silicone rubber, mixed iron-smelting silicon rubber, solid silicone rubber, methyl-ethenyl silicone rubber, molding silicone rubber, mold duplicating rubber for resin craft makers, special silicon for manual molding, shoe mold rubber, pad printing silicon, silicon oil, 107 base, DMC etc. For plastic toys factories. With a product line of tens of categories, we can offer quick copying with precise contraction ratio (up to two thousandth) for mold making. To reach the internationally leading quality standard with competitive price is our best ambition that merits your trust.
RTV-2 Mold making silicone rubber
[1] RTV-2 silicone rubber for mold making
RTV-2 molding silicone rubber mainly applicable to make the silicone mould for cultural relic duplication, architectural decoration, resin crafts, lighting ornaments, candles, statues, model design, product exploitation, etc.
[2 ]RTV-2 silicone rubber for pad printing
Pad printing silicon rubber is specially designed for silicon pads which requires to be exquisite, without impurity or granules. Silicon pad is a carrier which transfer printing the patterns on the steel plate onto the toy products' Surface. Pad printing silicone rubber is mainly used for printing irregular patterns of plastic toys, electroplating products, electronic toys, trademarks.
[3] RTV-2 manual mold silicon rubber
RTV-2 manual mold silicon rubber is mainly applied in manual mold design, PVC plastic mould, cement product mould, melting-point alloy mould, alloy toy crafts, plastic toy, craftwork, gift and stationery, big statue, cultural relic duplication, shoe sole mould production, pad printing orientation, electronic appliances vibration resistance, etc.
[4] HTV-2 Silicone rubber
HTV-2 silicone rubber is applied in metal crafts, hot stamping silicone roller, hot stamping silicone plate, mobile phone keycap, PC keycap, telephone keycap, TV remote control keycap, electronic products, silicone rubber products field, etc.
[5] Disc silicone rubber
Disc silicone rubber is mainly applicable to zinc aluminum alloy arts and crafts, imitation of gold and silver ornaments, fishing tools, bracelets, hanging ornaments, furniture fittings, decoration accessories, toys and gifts, etc.
