How to Clean Gas Stove Burner Holes

Gas burners are also called stove burners or gas stove burners, produced by brass casting or iron casting. As a leading iron foundry in China, Yide casting has rich experience in iron casting, we provide quality brass cast gas stove burner and iron cast gas stove burner, producing gas burners in China for many years. Therefore, we have always wanted to write an article for buyers to understand all the issues related to gas burners.

Applications

The gas burner is a gas combustion device, which makes gas and air enter the combustion zone separately or mixed to achieve stable combustion. Fuel gas includes acetylene, natural gas or propane. Gas burners are widely used in residential and industrial fields, from ordinary kitchen stoves to hospitals, restaurants, outdoor grills, industrial stoves and boilers.

Types

There are hundreds of types of gas burners. We only list some of them, such as portable stoves, outdoor gas stoves, natural gas stoves, propane gas stoves, burners, large stoves, small stoves, star stoves, single stoves, rectangular stoves, frying boilers, camping gas stoves, double Gas stove, fireplace gas stove, portable gas stove, LP gas stove, commercial gas stove, butane gas stove, etc.

Materials

According to our experience, most gas burners will use gray cast iron ASTM A48 Class20 or Class30, but Class35 is rarely used. Why, because small fire-proof holes need to be processed, so if the hardness of the material is too high, it will be difficult to drill. You can’t compare these holes with other ordinary holes, and it will be more difficult to drill holes in small buttons. Moreover, the strength of class20 should be sufficient for the application.

If you want to learn more about the degree of these materials through other standards (such as Germany, Japan, United Kingdom, or ISO), please check the material comparison of gray cast iron here.

1.ASTM A48 grade 20 is equal to GG15, HT150, FC150, ISO150.
2. ASTM A48 Class 30 is equal to GG20, HT200, FC200, ISO200.
3. ASTM A48 Class 35 is equal to GG25, HT250, FC250, ISO250.

Some buyers may choose a higher degree to obtain stronger parts, and we do not recommend that you do this. The higher the degree, the more difficult the production, the higher the defective rate, and the higher the cost. As for the gas burner, too high tensile strength is not required.

Casting Process

Based on our experience, we recommend using two casting processes to produce gas burners. One is green sand as the outer shell and resin sand as the core. We make the core through the shell molding process, which means that we first make a pre-coated resin sand core, and then use ordinary floor molding with green sand to produce the shell. By the way, the inner surface is good and the outer surface is normal. This process can meet your requirements with the lowest production cost. Of course, green sand must be very fine, ordinary coarse sand is not acceptable.

The other process is to manufacture the shell and core through the pre-coated resin sand and shell molding process. By the way, the inner and outer surfaces are good, but the production cost is higher. Therefore, the buyer should choose the appropriate casting process according to the specific application.

Processing

The only problem with gas burner processing is the processing of exhaust holes. Sometimes, there are dozens to hundreds of fire-proof holes on the gas burner. They need to drill. If you fail to drill one of them, the gas burner will malfunction, so it is not easy to drill according to your ideas. The Dandong Foundry used several small drilling machines for drilling. Several workers are responsible for drilling these small holes every day.

Mode

As for the mold of the gas burner. According to our experience, we recommend using iron molds to make resin cores and aluminum molds to make gas burner shells. However, in order to obtain a better external surface quality, resin sand should be considered for the shell, and then iron patterns must be used as the shell. All in all, the gas burner must have a metal pattern.

Surface Coating

There are several types of surface coatings for gas burners. One is black heat-resistant paint, the other is normal black paint, which is cheaper than a heat-resistant air cushion, and the third paint uses anti-rust oil. Heat-resistant coatings are the most expensive coatings, from about US$0.23 to US$0.25/kg. If your gas burner weighs 1kg, the price of its heat-resistant paint is about 0.23 to 0.25 USD/pcs.

Supplier

Although many iron foundries can produce gas burners, not everyone can produce gas burners at a low price, and the production efficiency is high. This is mainly because they should use fine sand and should have experience in drilling many small holes. Most importantly, extreme care should be taken during casting, cleaning and machining. Any hasty operation will lead to malfunction. Therefore, it is difficult to find a good gas burner supplier.

Price

The price of a gas burner is mainly related to the unit weight (especially the weight of the blank casting), the number of exhaust holes, the complexity of the structure and the surface quality of the outer surface.

Defects

The main defects of gas stove heads are blisters on the surface (baths with a diameter of 2mm and a depth of 1mm are usually allowed), damage to the vent holes, and dirty surfaces with sand. Please note that welding is not allowed under normal circumstances, because the stove burner should be airtight.

 

Yide casting is a professional casting manufacturer, focuses on manufacturing top quality ductile cast iron, grey cast iron, cast steel, brass casting, bronze casting for our customers since 1993. In addition, Yide casting also keeps a top passion for advanced technology in the gas stove burners casting. If you are looking for a stove burner foundry, please don’t hesitate to contact us,

The Differences Between Casting and Forging

1. Different production process:

Casting is a processing method in which the metal is melted into a liquid and poured into a mold, and then cooled, solidified and cleaned to obtain a casting of the desired shape. Casting can produce various objects with complex shapes.

Forging is to use methods such as hammering to make a metal material in a plastic state into a workpiece with a certain shape and size, and to change its physical properties.

2. Forging and casting purposes:

Casting is a relatively economical method of forming blanks, which is generally used for parts with complex shapes.

Forging is generally used in the processing of forgings of a certain shape and size.

3. Advantages of casting and forging:

Casting:

1. It can produce parts with complex shapes, especially blanks with complex cavities.
2. Wide adaptability in size, from a few grams to hundreds of tons.
3. Wide sources of raw materials, low prices, such as scrap steel, scrap parts, chips, etc.
4. The shape and size of the casting are very close to that of the parts, which reduces the amount of cutting, which is non-cutting.
5. Widely used. 40% to 70% of agricultural machinery and 70% to 80% of the weight of machine tools are castings.

Forging:

Forging can eliminate defects such as loose as-cast during the smelting process and optimize the microstructure. At the same time, due to the preservation of the complete metal streamline, the mechanical properties of forgings are generally better than castings of the same material.

4. Disadvantages of casting and forging:

Casting:

1. The mechanical properties are not as good as forgings, such as coarse structure and many defects.
2. In sand casting, single piece and small batch production, the labor intensity of workers is high.
3. The quality of castings is unstable, there are many procedures with the complicated influencing factors.

Forging:

1. In forging production, trauma accidents are prone to occur.
2. The cost is much higher than casting.

Yide Casting is known as a professional iron foundry in China, has rich casting experience in casting and machining, we are committed to producing quality but competitive price casting iron parts for our customers, all of our casting iron parts has been marked as “JM”, we want to develop Yide casting, JM casting into the world, if you are looking for a casting iron foundry, please don’t hesitate to contact us, send us your drawing file, we’d like to serve you and provide best casting iron products.

Machining Surface Finish Chart, Comparator, Method, Degree, Ra, Rz, RMS

The surface finishes smooth degree is an important requirement, as for the machining to steel and iron castings.

Today, Yide Casting will introduce the conversion in China and USA standard for Ra (um), Ra (micro inch), Rz (um), RMS and finish degree, and the related finish methods as well.

China Finish Degree	China Ra (um)	China Rz (um)	USA Ra (um)	USA Ra (micro inch)	USA RMS (micro inch)	Machining Finish Method refer to iron-foundry.com
1	50	200	50.0	2000	2200	The most coarse machining or good rough casting surfaces
2	25	100	25.0	1000	1100	Machining marks very obvious. Rough turning, boring, planning, drilling.
3	12.5	50	12.5	500	550	Machining marks obvious. Rough turning, planning, milling, drilling.
4	6.3	25	8.00	320	352	Machining marks visible. Normal turning, boring, planning, drilling, grinding.
			6.30	250	275
5	3.2	12.5	5.00	200	220	Machining marks not obvious, but still visible. Normal turning, boring, planning, drilling, grinding.
			4.00	160	176
			3.20	125	137.5
6	1.6	6.3	2.50	100	110	Machining marks blur, but marks direction obvious. Number controlled turning, boring, planning, drilling, grinding.
			2.00	80	88
			1.60	63	69.3
7	0.8	6.3	1.25	50	55	Machining marks direction blur, but still visible. Number controlled turning, boring, planning, drilling, grinding.
			1.00	40	44
			0.80	32	35.2
8	0.4	3.2	0.63	25	27.5	Machining marks direction blur. Reaming, grinding, boring, rolling.
			0.50	20	22
			0.40	16	17.6
9	0.2	1.6	0.20	12.5	13.75	Machining marks direction invisible. Grinding, super machining.
				10	11
				8	8.8
10	0.1	0.8	0.10	4	4.4	Surface dark gloss. Super machining.

The surface finish comparator for milling, turning, reaming and grinding

Yide Casting is a leading iron foundry, provide both casting service and machining service, equipped with imported advanced machining machines in our machining workshop, if you have both casting and machining demands, Yide casting is a good choice for you, we promise good quality casting and machining requirement,  please feel free to contact us for more details.

Spheroidizing Treatment Method of Ductile Cast Iron

There are many spheroidizing methods for ductile iron castings. And the pour-over modification process is currently the most widely used spheroidizing method all over the world.

The treatment package used is usually a dam type spheroidizing treatment package. In order to reduce the intensity of the reaction between molten iron and magnesium, and the volatilization rate of magnesium vapor, the pour-over treatment process usually uses an alloy nodulizing agent with a lower magnesium content.

The process of spheroidizing treatment of ductile iron castings including the following steps.

First, put the nodulizing agent into one side of the dam, and cover the top with ferrosilicon alloy. And then cover it with rust-free iron filings, steel plate or other covering agent. When spheroidizing, the molten iron should be flushed into the other side of the molten iron ladle as much as possible.

The absorption rate of magnesium in the flushing method is generally 30% to 50%. There are three ways to improve the spheroidizing effect.

1. Increasing the ratio of the height to the diameter of the treatment package.

2. Adopting low-magnesium alloy spheroidizing agent.

3. Reasonable molten iron temperature and covering dosage.

The advantages of the pour-over method are simple processing and equipment, easy operation, greater flexibility in production, and low technical content required. However, the disadvantage is that the spheroidization process is higher pollution by magnesium light and smoke, and the absorption rate of magnesium is low.

There is also a subcontracting method, which uses pure magnesium as a nodulizing agent.

The subcontracting method is suitable for processing molten iron with high sulfur content. At the same time, this method can better separate impurities such as magnesium sulfide and silicate from the molten iron. The reaction with molten iron is not very violent and the temperature of molten iron is less. Therefore, it is safe to use, and the absorption rate of magnesium can reach 60% to 80%.

The specific process flow contains the following steps.

1. Before the spheroidizing treatment, place the subcontractor horizontally.

2. Inject quantitative molten iron, and then add the nodulizing agent to the reaction chamber.

3. Lock the closing device, and then close the ladle cover.

4. Turn the molten iron ladle to stand upright.

By now, the molten iron enters the reaction chamber through the small holes in the reaction chamber. The flow rate is related to the area of ​​the small holes and the static pressure in the molten iron ladle.

Magnesium vaporizes by heating, forming a magnesium vapor pressure in the reaction chamber. When the pressure exceeds the static pressure of the molten iron in the ladle, the molten iron stops entering, and the latent heat of vaporization of magnesium reduces the temperature in the reaction chamber. And the vapor pressure also drops, and the molten iron enters the reaction again. This kind of automatic adjustment can make magnesium react with molten iron more smoothly.

The spheroidizing process of the subcontracting method also produces large magnesium light and smoke, and the small holes in the reaction chamber in the subcontracting are easily blocked by molten iron or molten slag. It is troublesome to clean and maintain the size of the small holes. The spheroidizing method is difficult to continuously process the molten iron.

Yide Casting is a professional iron foundry in China, with 28 years’ casting and machining experience, provides ductile iron cast, gray iron cast, brass iron cast services for our customers, you only need to show us your drawing file and requirements, we will ensure the final solution and send you a cast sample to check the quality and parameters, if you are looking for professional casting foundry, please don’t hesitate to contact us for more details.