Tungsten carbide roll ring has characteristics of good wear resistance, high temperature red hardness, thermal fatigue resistance and thermal conductivity and high strength, it is a key component of high-speed wire rod rolling. Tungsten carbide roll ring is mainly used for high-speed wire rod mill pre-finishing unit, and finishing units, reducing sizing unit, rolling play area and improve the performance of rolling material effect decreases. Tungsten carbide roll ring line production to meet the needs of making various types of high carbon steel, alloy steel and special steel.
Tungsten carbide roll ring material is developed on the basis of the tungsten carbide tool material, it is made of refractory metal compound (WC) as a matrix, and transition metals (Co, Fe, Ni) as the binder phase. Tungsten carbide roll ring has good abrasion resistance, high-temperature red hardness, thermal conductivity and high temperature strength and other characteristics, it has been widely used in making high-speed wire rod, bar, rebar, and other rolling seamless steel pipe production. During normal use, the surface due to the impact of high frequency alternating thermal shock and hot water fog and thermal fatigue cracking, commonly known as crack, different forms of wear or fracture failure is the main reason in this case appears thermal fatigue crack initiation and propagation. When the groove face cracked it must be grinded to prevent crack propagation caused by abnormal breakage roller ring.
Tungsten carbide roll rings performance requirements
When the roller ring used, the roll diameter roller ring is smallest , and line the fastest, roll ring subjected to thermal shock highest frequency. Therefore, it requires roll ring material having excellent abrasion resistance to ensure the dimensions of finished wire after a certain amount of rolling ; and requires a high fracture toughness to resist the thermal expansion of the higher frequency shocks caused thermal fatigue cracks; the same time, need to have a high thermal conductivity to suppress thermal fatigue crack initiation. During use, the maximum operating speed of tungsten carbide roll rings up to 18000 r / min, and rolling up to the maximum temperature of the contact 1200 ¡æ. It is in this harsh working conditions, the roller ring wear resistance, toughness, resistance to thermal fatigue performance high demands. To achieve these performance requirements, often using coarse-grained low cobalt grades roller ring, such as WC-6% Co.
Tungsten carbide roll ring characteristics
1. Contains a microscopic hard spots, have a high resistance to abrasion
2. The macro-hardness is high, up to 69 ~ 81HRC or more.
3. Material hardening tendency serious.
4. Material with low thermal conductivity.
5. High intensity of the material.
6. Stable chemical properties, very high melting point.
Tungsten carbide roll ring using requirements
Heap of steel rolling process is inevitable accident, the heap of steel rolling various causes overheating will cause the roller ring side, while at the other side of the water-cooled quenching effect, causing the roll surface heat cracks, restoring rolling when this heat leaving the roller ring rapid crack propagation easily cracked. Because rolling at high speed rolling finishing train, the temperature is high, when the stack of steel metal deposited on the roller ring groove around, due to the effect of high temperature molten metal ring attached to the roller surface, forming a "product turtle" phenomenon. In this case, local heating roller ring, resulting in heat stress, heat fatigue easily formed, if the roller ring continued use, the potential cause fracture failure. Remove the stack of steel roll ring, regardless of the groove is available, should be re-grinding, in order to eliminate the stress roll ring to prevent thermal fatigue crack initiation and propagation.
Tungsten carbide roller ring has good heat conduction properties, down less hardness at high temperature, good thermal fatigue resistance, wear resistance, high strength, and other characteristics,so it is suitable for high speed rolling, and it become the good choice for roller ring.
TYPES
1
Cement 42.5 N
CEM II/A-L
Bulk
2
Cement 42.5 R
CEM II/A-L
Bulk
3
Cement 42.5 N
CEM II/A-L
Big Bag 1.5MT
4
Cement 42.5 R
CEM II/A-L
Big Bag 1.5MT
5
Cement 42.5 N
CEM II/A-L NA 442
Bag 50Kg BUNDLED 2,2 MT per pallet
6
Cement 42.5 N
CEM II/A-L NA 442
Bag 25kg BUNDLED 2,15 MT per pallet
7
Cement 42.5 N-LH/SR5
CEM I
Bulk
8
Cement 42.5 N-LH/SR5
CEM I
Bag
9
Cement 52.5
CEM I
Bulk
10
Cement 52.5
CEM I
Bag
Below present our general procedures for the purchase and sale of sugar of Brazilian origin:
1- Buyer issues a Letter of Intention (LOI) addressed to Seller;
2- Seller issues a Soft Corporate Offer (SCO);
3- If Buyer accepts SCO, signs and seals SCO and then sends to Seller;
4- Seller issues Full Corporate Offer (FCO);
5- Buyer signs and seals FCO and issues an Irrevocable Corporate Purchase Order (ICPO), addressed to Seller;
6- Seller issues draft of Sale and Purchase Agreement (SPA) to be discussed and commented;
7- SPA is signed by Seller and Buyer;
8- Buyer issues draft of the Payment Instrument (SBLC/DLC) for approval by Seller�´s Bank;
9- If Seller�´s Bank accepts, Buyer issues the bank guarantee (SBLC/DLC);
10- Seller issues Performance Bond (PB) 2%;
11- Seller prepares the product and export documents;
12- Buyer receives the export documents by mail;
13- Buyer makes payment 100% to Seller ´s Bank through transfer bank (Swift Message MT-103);
14- Shipping;
15- Seller sends the original export documents to Buyer;
Please contact for full specs on quantities, delivery terms, etc...
NOTES:
The financial instrument (SBLC / DLC) must be issued by the Top 50 Bank in the world ranking.
We supply the Required Grade and Type of Cement that have been procured from the Top Brands made available to the customers at the required Specification for the best prices in the Bulk quantities required.
It is obvious that Cement is a very useful binding substance in construction. The usage of cement over diverse fields of construction has made it a very significant civil engineering material.
Cement mixed with water and fine aggregate produces mortar, sand and gravel to create concrete. It is the most-consumed resource and is widely available in the market.
India is World’s Second largest Cement Producer. India is contributing tremendously to the Supply of Cement across the Globe. The Capacity of Indian market to produce and supply cement is increasing at swift pace.
We source the best quality and from the best brands. We supply OPC, PPC, Slag cement, White Cement and Sulfate Resisting Cement.
61905 Cemented Carbide Rolls Suppliers
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The cement is the most demanding and essential raw material used in various production and construction activities. The cement industry has witnessed a steady growth in the market as different range of products using cement are manufactured. It is a binder, a raw material substance that serves as an adhesive to other materials. Cement mixed with water and fine aggregate produces mortar, sand and gravel to create concrete. It is the most-consumed resource and is widely available in the market. * Portland Cement is the most common type of cement used for concrete, and stucco. Types Of Cement We offer include: Ordinary Portland Cement Portland Pozzalana Cement White Cement Portland.
Origin :- Vietnam . Turkey
Sulfate Resistant Portland Cement SRPC also named Sulfate Resistant Cement SRC is one of hydraulic binding materials can resistance to sulfate ion attack
Type High Sulfate Resistant Cement PHSR and Moderate Sulfate Resistant Cement PMSR
Grade 325 425
Application
To make concrete of sulfate resistance marine concrete maritime works
To make cement boards precast cement products cement pipes precast concrete pile shop fabricated members
Sea water attack resistance projects for example sea wall dam mariculture project sea water desalination project oceanarium etc
Chemical resistant engineering concrete
To make sulfate resistant concrete engineering of harbor water conservancy underground tunnel drainage pipe diversion works road and bridge foundation etc
DIRECTIONS FOR USE:
- Shake well before using.
- Keep container closed when not in use.
- Set time is the time required before joint can safely be handled.
- Cure time is the time required before joint can be pressure tested.
1. Cut pipe square with saw or hand cutter. Remove all burrs.
2. Check dry fit of pipe and fitting. Pipe should easily go A1/A3 to A1/A2 way into fitting. If pipe bottoms into fitting it should be very snug.
3. Pipe and Fitting should be free of dirt, grease and other foreign materials. If necessary clean pipe and fitting using RPC-WELD Pipe Cleaner. Primer is highly recommended for 3 and larger diameter installation. Apply liberal coat. Primer will start softening surface of pipe and fitting thus ensuring superior joint.
4. Use applicator supplied with the can or suitable applicator at least A1/A2 the size of the pipe diameter.
5. Apply liberal coat of cement to the pipe (equal to depth of fitting) and adequate coat inside of fitting. Make sure there is no uncoated surface. Avoid puddling of cement, it may weaken the joint.
6. Immediately insert pipe into fitting with twisting motion. Cement should be wet. If it has dried recoat both parts. Use sufficient force to ensure pipe bottoms into fitting.
7. Hold joint together for 30-40 seconds to make sure pipe is not pushed out longer time if temperature is low and for larger pipes.
8. Allow 15 minutes set time before handling the assembly and 2 hours cure time if temperature is below 16 C or 60 F Longer cure time may be required for larger pipe and /or temperature is below 16 C or 60 F.
DIRECTIONS FOR USE:
Shake well before using.
Keep container closed when not in use.
Set time is the time required before joint can safely be handled.
Cure time is the time required before joint can be pressure tested.
1. Cut pipe square with saw or hand cutter. Remove all burrs.
2. Check dry fit of pipe and fitting. Pipe should easily go way into fitting. If pipe bottoms into fitting
it should be very snug.
3. Pipe and Fitting should be free of dirt, grease and other foreign materials. If necessary clean pipe and
fitting using RPC-WELD Pipe Cleaner. Primer is highly recommended for 3 and larger diameter installation.
Apply liberal coat. Primer will start softening surface of pipe and fitting thus ensuring superior joint.
4. Use applicator supplied with the can or suitable applicator at least the size of the pipe diameter
5. Apply liberal coat of cement to the pipe (equal to depth of fitting) and adequate coat inside of fitting.
Make sure there is no uncoated surface. Avoid puddling of cement, it may weaken the joint.
6. Immediately insert pipe into fitting with twisting motion. Cement should be wet. If it has dried recoat both parts.
Use sufficient force to ensure pipe bottoms into fitting.
7. Hold joint together for 30-40 seconds to make sure pipe is not pushed out longer time if temperature is low
and for larger pipes.
8. Allow 15 minutes set time before handling the assembly and 2 hours cure time if temperature is below 16 C or
60 F Longer cure time may be required for larger pipe and /or temperature is below 16 C or 6
RPC-WELD PVC solvent cements have passed the following tests performed according to ASTM Standard D2564
Test Pressure
2 hour Hydrostatic Burst Test 400 psi
2 Hour Lap Shear Test 250 psi
16 Hour Lap Shear Test 500 psi
72 Hour Lap Shear Test 900 psi
DIRECTIONS:
Keep container close when not in use
Set time is the time required before joint can safely be handled.
Cure time is the time required before joint can be pressure tested
1. Cut pipe square with saw or hand cutter. Remove all burrs.
2. Check dry fit of pipe and fitting. Pipe should easily go to way into fitting. If pipe bottoms into fitting
it should be very snug.
3. Pipe and Fitting should be free of dirt, grease and other foreign materials. If necessary clean pipe and
fitting using RPC-WELD Pipe Cleaner. Primer is highly recommended for 3 and larger diameter installation.
Apply liberal coat. Primer will start softening surface of pipe and fitting thus ensuring superior joint.
4. Use applicator supplied with the can or suitable applicator at least the size of the pipe diameter
5. Apply liberal coat of cement to the pipe (equal to depth of fitting) and adequate coat inside of fitting.
Make sure there is no uncoated surface. Avoid puddling of cement, it may weaken the joint.
6. Immediately insert pipe into fitting with twisting motion. Cement should be wet. If it has dried recoat both parts.
Use sufficient force to ensure pipe bottoms into fitting.
7. Hold joint together for 30-40 seconds to make sure pipe is not pushed out longer time if temperature is low
and for larger pipes.
8. Allow 15 minutes set time before handling the assembly and 2 hours cure time if temperature is below 60 F.
Longer cure time may be required for larger pipe and /or if temperature is below 60 F.
Do not test with compressed air.
DESCRIPTION: RPC-WELD CPVC is an orange, heavy bodied, high strength, medium setting CPVC solvent cement for all classes and schedule. This cement is manufactured in the India.
APPLICATION: RPC-WELD CPVC is for use on all grade CPVC pipes and fittings. This cement may be used for potable water, irrigation drain, waste, vent, sewer and conduit. This cement can be used for HOT and COLD water applications.
PROPERTIES AND SPECIFICATIONS:
Color Orange
Appearance Liquid
Set TimeFast Medium
Cure Time Consult ASTM schedule
Exceeds ASTM F- 493 specification
Shelf Life 3 years
Raw Materials from U.S.A
AVAILABILITY:
Size Units/case Units/ master
59 ml 24 192
118 ml 24 144
237 ml 24 96
473 ml 12 48
946 ml 6 24
DESCRIPTION: King PVC Solvent is a clear, medium bodied, high strength, fast setting PVC solvent cement for all classes and schedule. This solvent cement is manufactured in the India.
APPLICATION: King PVC Solvent is for use on PVC pipes and fittings. This cement may be used for upto 4â??â?? pipes and fittings with interference fit for potable water, irrigation, drain, waste, vent, sewer and conduit applications.
PROPERTIES AND SPECIFICATIONS:
Color: Clear
Appearance: Liquid
Set Time: Fast
Cure Time: Consult ASTM schedule
Exceeds: ASTM D2564 specification
Shelf Life: 3 years
Raw Materials from U.S.A
AVAILABILITY:
Size Units / case Units/ master
59 ml 24 192
118 ml 24 144
237 ml 24 96
473 ml 12 48
946 ml 6 24
DESCRIPTION : RPC-WELD PVC Solvent is a clear, heavy bodied, high strength, fast setting PVC solvent cement for all classes and schedule. This solvent cement is manufactured in the India.
APPLICATION : RPC-WELD PVC Solvent is for use on PVC pipes and fittings. This cement may be used for all grade pipes and fittings irrespective of diameter with interference fit for potable water, irrigation, drain, waste, vent, sewer and conduit applications.
PROPERTIES AND SPECIFICATIONS:
Color: Gray
Appearance: Liquid
Set Time: Fast
Cure Time: Consult ASTM schedule
Exceeds: ASTM D2564 specification
Shelf Life: 3 years
Raw Materials from U.S.A
AVAILABILITY:
Size Units / case Units/ master
50 ml 24 192
100 ml 24 144
200 ml 24 96
250 ml 24 96
500 ml 12 48
1000 ml 6 24
61905 Cemented Carbide Rolls Suppliers
Short on time? Let Cemented Carbide Rolls sellers contact you.
