Saturday, 29 October 2016

Which is best- Nichrome or Nickel-200 or Titanium or Kanthal or Stainless steel

Various wire materials are used to develop coils. This post describes the difference between nichrome, Nickel 200, titanium, kanthal and stainless steel. These wires will meet the serve purpose, there are basic fundamental applications that place the world apart. It is because as we dig deep in the science of the various wire types, it help you distinguish which wire suits your needs best.


Nichrome Vape Wire
Nichrome is all known for its oxidation resistance properties by which it can perform at the high points without being attacked by oxidation. Nichrome is a popular electric heating element, hot wire foam cutters and domestic equipments and tools. With its potential to quickly heat up with small time, Nichrome is the popular choice for the most of e-cigarette coils and cloud-chasing constructions. As compare to Kanthal, Nichrome 80 wire shows lower melting point and lower highest service temperature. Therefore the service life of nichrome will be generally smaller than kanthal.

FeCrAl Vape Wire
Kanthal wire popularly developed its appearance in the e-cigarette just after Nichrome and rapidly became famous among the coil manufacturers. For its low price, extensive availability and actually i can be made in several gauges, Kanthal wire offers numerous combinations of various size coils creating various resistances for any vape style. Wire made from Kanthal serves at the higher temperature and has higher melting point as compare to Nichrome, offering a longer service life. Many people believe that Kanthal wire goes off taste due to presence of iron, but not all. The service of kanthal wire  makes it a primary choice of beginners who are looking for the learning opportunities.

Titanium Wire
Titanium wire is somehow new in the market in context to nichrome and kanthal and is used in several sub-ohm tank coils for controlling temperature. It is stronger as compare to Nickel 200 that makes it easier to use. Titanium offers double times resistance as compare to nickel 200 making it fit for achieving required resistance more easily. A factor to be worried about Titanium is that it heats up to the ignition level. If the metal heats, you will see fire that cannot be handled by any fire extinguisher  in which case you have to allow it burning out. Additionally the development of titanium dioxide is also not good for health.

Pure Nickel wire
Nickel 200 has very high temperature coefficient. This is the major reason that many people decide to use Nickel 200 wire for the initial temperature control mod. Nickel is a soft wire and springy, making it harder to work as compare to kanthal or titanium. It is a supreme concept to space the wraps apart so the heat is uniformly distributed over the wire length. For any warp in coil that are in contact of each other, it permits uniform heat supply with tight wraps, although, it can take time.

Results

If you are confused about which is the suitable wire, ask if you will use temperature control or use the variable wattage? This will help you in your work while choosing which wire is suitable- Kanthal, stainless steel and Nichrome. 

Thursday, 27 October 2016

Industrial quality conveyors for mining to food applications

The woven wire mesh has the common uses in chemical, plastic, automotive, aerospace, electronics, industrial screening such as in mining, lab sieving, food processing and several other applications. The woven wire cloth has a great aesthetic appeal. The wire mesh is made from the various materials such as:
1.       Steel
2.       Stainless steel
3.       Non-ferrous materials such as aluminium, nickel,  Monel and copper
4.       Super alloys such as Inconel, Incoloy, Hastelloy etc.

The choice of material, quality and treatment are crucial for the characteristics of the woven wire mesh product. Specific needs can be met by using the particular set of materials. The cost for various materials varies broadly. Becoming aware of which is the best fit for specific applications and which processes can be used are particularly crucial for ensuring the meeting needs for function, stability, safety and economy.

We have designed he processed for quality assurance. For reception of wire materials and production and before the delivery our lab conducts special analysis along with the classic materials and quality checks.

Our performance is based on experience, regular research and development of products and manufacturing process, along with the skills of our team. This combination of skills and innovation enable us meeting the needs of our customers.





Mesh belts
Heanjia Super-Metals is a leading supplier of perforated metal conveyor belts that are used across the industries including heat processing, forging, foundry, food processing, snacks, ceramics, glass, automotive and others.

Our conveyor belts fit in almost all applications including tight wire mesh for versatile and conveying small components, smooth surface belts for perfect transfer, belts with bog openings allow easy flow of air and water for simple cleaning of your product. These belts are fit for carrying metal components through copper and aluminium brazing furnaces, bronze and iron components through sintering furnaces, textiles, chemicals for dryers and other applications in which the belts are used for washing, annealing, cooling and polishing of materials.

The metal woven wire mesh conveyor is also used in the food processing industry in clean dry, bake, cook, freeze, salt, can and others.

Our metal woven wire mesh is made in the different sizes to be fit for any process, a wide range of materials are used from carbon steel to high strength alloys. Our conveyor belts can carry light to heavy loads and they perform excellence without the help of an operator. They can serve at the different temperature limits from low to high and withstand the diverse application media such as acids, alkaline, chemical corrosion, abrasion and impact.

The belts are made in the various types such as: furnace belts, mesh belts, baking, metal woven mesh, lehr bels, positive drive belts etc.

Heanjia is specialised in quick deliveries for immediate requirements. We offer the following conveyor belt types:

Balance, Cordweave, Universal DBL balance, chainweave, grid link, precision balance, flatwire and single.


We manufacture heavy duty belts for mining and other industries around the world. Our skills in the significant advancement in the conveyor belt design for the strong and heavy belts are acknowledged by our customers. 

Monday, 24 October 2016

Behavior of Monel 400 in Arabic Gulf seawater

Monel 400 is exposed to the different natural aerated seawater at the different times in the Arabian gulf. Monel is a solid solution alloy that can is hardenable by cold processing. It is widely used in the different applications such as chemical processing, gasoline, fresh water containers, crude petroleum stills, pumps, propeller shafts, seawater fixtures etc. The corrosion of alloy 400 reduces when more nickel content is added.

The natural sea water was collected from Arabian Gulf, Monel plate was used. Alloy 400 rods were used for electrochemical measurements to develop the coupons for use in the sea water. To evaluate the pitting corrosion of alloy in the salt solution, the SEM and EDX tests were performed. The presence of oxygen and carbon in the alloy result in the development of oxide layer and the pit is found to be covered with this layer in addition of other materials.

An enlarged space in the pit occurred on the surface of alloy that is exposed to free aerated stagnant salt solution for 160 days. It is found that the developed pit is deep and broad with corrosion materials stacked in few regions. The presence of chloride ions increases the potential difference across the layer. The regular development of voids result into localized damage of the passive layer that dissolves faster than other components.


The affected regions were found to be enriched of copper whilst the regions around the active sites have higher nickel concentration. The corrosion of alloy 400 occurs by the specific leaching of nickel from the alloy offering a spongy copper rich material in the pit base.

The chlorine and sulphur elements present in the marine water collect in the pit and interact with iron and nickel that are present in the alloy therefore iron and nickel are slightly present in pit as compare to their real availability in the Monel alloy.

With the passage of time, the layer dissolves because of pre-immersion of alloy’s electrode in the salt solution, resulting into pitting. Pits develop in the areas where the adsorbed oxygen on the alloy’s surface is replaced by the vigorous particles for example chloride ions that are found in the Arabian Gulf sea water. It is because the choride ions have smaller diameter that allow their entrance in the protective oxide layer and replaces oxygen at the places where the metal and oxygen are not strongly connected.

The development of corrosion materials nominally secures the alloy because the potential reduced in the positive direction. The reduction in the corrosion rate is made possible by the development corrosion materials as wells as the potential of the salt solution to develop layers on the surface of alloy.


So overall the Monel alloy 400 receives general and localized corrosion in the stagnant Gulf seawater. The pitting is noticed on the alloy caused by chloride ions and dissolution of nickel. Increased exposure reduces the current and increases security potential in the negative direction. The pitting increases with increasing the immersion time length in the sea water.

Wednesday, 19 October 2016

Durable perforated metal solutions for aesthetic applications

Heanjia Super-Metals offers perforated sheet metals for facades, sun screens, balustrades, cladding, screening, fencing and roofing. We help you in completing your building project with perforated metals. The drawings of sheets are created for your approval before fabrication. Moreover the sheets are also made for your facade in sequence and the count of specific sheets that is advantageous when configuring sheets on the large facade project.

We not only perforated even also cut, bend and shape that is essential for the whole essential finishes. The flat perforated sheets are delivered to you or if needed, we also provide secondary operations such as cutting, bending and surface processing.  

With the higher energy demand, it is essential to focus on the reliable building design and discovering the reliable way to handle the temperature and climate conditions in the buildings. If it is for a new project or the refurbishment of an existing building, the sun screens in the perforated or expanded sheet are constructed from the reliable materials and offer an environmentally friendly solution that helps limiting the need for ventilation and quenching hence reducing the energy use.


Perforated Sun screens
The screens offer the benefit of maintaining the privacy without limiting the view. They permit sufficient magnitude of natural light in the building during the daylight.

With a large count of patterns and screen solutions for you to select from when choosing your perforated screens. If you require a single screen or several thousands of square meters, you can find individual solutions suiting your special needs.

Balustrades
When you are looking for any range of perforated project, Heanjia offers vast range of solutions to make it feasible for you easily. We offer you the privilege of perforated sheets for staircases, balconies and railings and choosing the recommended material such as stainless steel, aluminium or carbon steel.

We offer the wide range of selections in perforated metal sheets for balustrades. Using the perforated sheets for walls and roofs, it is feasible to combine aesthetic factors with the requirement for suitable sound conditions. We offer a wide range of perforating designs that are made to assist architects in designing the solutions to enhance the sound absorption as well as visual appearance of a wall or roof. Although, if you are unable to find the suitable pattern that you are seeking for, we help designing the custom pattern to suit your needs.

The perforated metal panels with sound fiber can be the perfect solution to act as sound absorber hence offering a suitable service media.

With stainless steel and aluminium perforated metal, an aesthetic solutions can be delivered for new or renovated building projects.


The fences and screens in the perforated metal are widely used beneficially in the diverse range of applications. For instance, if you need a solid and secure solution for shielding a region or if you need to make a shelter then perforated metal is the prime solution in such cases. The perforated metal offers adequate covering and flow of light and air, hence it is fully reliable for use. 

Monday, 17 October 2016

Expanded metal durability and aesthetic features

Expanded metal mesh is a uniform material that doesn’t stretch. It is very easy to deal with expanded metal sheet as it is highly slip resistant and its production is very economical.

Over the years, the use of expanded metals has been increased widely almost in all fields for example electric equipments, acoustics, firing, automobiles, vessels, machine shielding, road guards, buildings, households, shelves, bird cages and stands.

The expanded metals are commonly made from steel plate, stainless steel, nickel, aluminium, silver, titanium etc.  The common uses of expanded metals are in EMI shielding, jewellery, mechanical apparatus, filters, chemical systems and more.


Basically expanded metal is a intermediate material permitting the passage of air and light, it is more rigid as compare to plan sheet from which it is made. It is fabricated from malleable metal sheet or coil in the diamond shaped holes. These holes are in equal size throughout the sheet.

The decorative expanded meshes are made in smaller diamond sizes or equal openings.

The architectural meshes are made with special shaped openings that offer supreme appeal for architects and designers.

The special fine mesh is an accurate, mini type of traditional expanded metal that is developed from the different types of metals. The fine mesh can be flattened or raised and is delivered in coil and sheet forms.

In order to order the expanded metal, you need to specify the following designations:
Strands- It describes the metal sides.

Strand Thickness- It describes the thickness of the expanded metal that is used to fabricate the expanded sheet.

Strand Width-Magnitude of metal sent to dies to develop single strand.

Strand thickness and width- It can vary to develop various holes. The strand width should same or surpass the metal thickness.

How expanded metal is beneficial
These sheets offer natural percentage of openings. This magnitude or percentage can be adjusted to contain the architect or the specific needs of designer. By altering the pattern sizes or strand width, it is feasible to control the open area % hence controlling the passage of air and light flow according to your application needs. Moreover, the light flow can be limited by the orientation or pattern pitch.
The set of uniform angles of the threads and bonds treating as facets reflect or improve the lighting. The expanded sheet has become highly demanding among the architects as it offers special characteristic.

The expanded metal is fit for a special style or design. The extent of angles and various types of slits, stretches and indentions may also depend on application requirements. The expanded sheets for architectural, decorative or traditional purposes are slit and stretched into a durable and non-ravelling sheet. The metal twist that is noticed during its expanding results into offering greater durability and strength as compare to the original sheet of the raw material. The metal can be used for aesthetic appeal in fact also for the structural features obtained.


An expanded sheet can withstand 90 degree bend with ¼ inch in the radius in any direction without cracking. 

Wednesday, 5 October 2016

Hastelloy mesh for service at the elevated temperature media

Hastelloy X is a high performance nickel-chromium-iron-molybdenum alloy made for service at the elevated temperatures. It attains a combination of supreme oxidation resistance, fabrication and strength at the high temperature. Hastelloy X describes supreme ductility after prolong service to elevated temperatures about 870oC and has supreme forming and welding properties. The alloy has a significant service in gas turbine engines for burning component zones for example transition ducts, combustor cans and flame holders and heaters. It is also preferred for service in the industrial furnace applications as it has extremely great resistance to oxidation in the reducing and neutral atmospheres.
The initial step was to select the development process for the mesh, it included wire cutting, weaving and eradication from the jig. The mesh, as a reinforcement structure was developed by initial cutting and inserting wires in the jig. To develop the reinforcement structure, the Hastelloy wire mesh is developed to offer strength by weaving the warp and weft wires.

Resistance welding is a traditional electric welding process utilized by the industries. The resistance weld is attained by heat and pressure combination. The electrical resistance of the material is welded causing the localized heating in the compartment. The essential magnitude of welding period is found by material type and thickness, current and cross-sectional area of the welding tip contact surfaces. The benefits of spot welding include spot welding includes energy consumption, part deformation, development rates, automation, no need of filler materials, nominal heat supply to weld metal and expert welder.


Hastelloy X mesh maintains a uniform aperture size during spot welding; feeler wire tool was utilized to estimate the clearance among two adjacent wires when meshes were developed. For adequate stability and firmness during plasma spray, meshes were connected on the stainless steel frame.

For mesh coating with bond and ceramic coatings, a rough surface was needed. The coated Hastelloy mesh was heated for two hours at 200oC in an electric furnace to discard the soaked moisture from coating. The Hastelloy mesh offers larger aperture size than molybdenum mesh. The heat processed samples undergo isothermal and cyclic oxidation analyses, the areas of external and internal components were exposed to air. The internal parts were also developed by cutting the specimens in longitudinal and transverse directions. This test analysis is utilized for strengthening and non-strengthening materials that do not crack or failure for the external surface in the limits of a loading analysis.

An effect of static heat exposure on the cracking and damage of the material. To avoid the heat shock to the composites the heating rate of the furnace in the isothermal analyses from room temperature to 1050oC was selected as 1.8 oC per minute. At temperature of 1050oC, the shade of the specimen got orange color and subsequent to each interval two samples, sprayed and one hea processed, were eradicated for metallographic test.


With heat cycling and isothermal tests, the processed ceramic samples were tested to find changes in their appearance. The Hastelloy mesh offered good performance throughout the tests.