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Zhucheng Chengda Food Machinery Co., Ltd. is a food machinery company dedicated to the production of preserved vegetable egg frying machine, multi-functional full-automatic egg frying machine, large-scale full-automatic egg frying machine, household egg frying machine, Spicy Hot Pot egg frying machine, breakfast egg frying machine, egg gong fried egg frying machine, preserved vegetable egg machine.

Zhucheng Chengda Food Machinery's preserved vegetable egg frying machine, multi-function fried full-automatic egg frying machine, large-scale fried full-automatic egg frying machine, home fried egg frying machine, Spicy Hot Pot egg frying machine, breakfast fried egg frying machine, egg gong fried egg frying machine, preserved vegetable egg machine have the following advantages and characteristics:

1. Improving efficiency: The egg fryer is equipped with an automatic temperature control system, which can automatically control the temperature. When the temperature reaches the set temperature, the equipment will automatically power off, and when the temperature is lower than the set temperature, it will automatically heat up, which is more effective in improving efficiency.

2. Output optional: Our fully automatic egg production line adopts infinitely variable speed mechanical equipment, and the output can be adjusted by oneself. The entire machine leaves the factory with convenient installation and can be put into use in a short period of time

3. Labor saving: Our small egg fryer occupies a small area and is convenient to use. It can be operated by only one person, clean and hygienic, with low costs, and can save 3-5 labor costs.

4. Widely used: Not only can it be used for fried eggs and poached eggs, but it can also be used to make a series of delicious dishes such as gong shao, various meat patties, seafood patties, sun eggs, soft boiled eggs, preserved vegetable eggs, and so on. The fried eggs have a uniform color, beautiful shape, and tender taste, making them popular among consumers.

5. Easy to clean: Our egg fryer's mold has an oil guide groove for easy cleaning, no oil fumes, and no sticking to the pan.

6. Complete models: Our egg fryer has a complete range of mold models, including various shapes such as "heart shaped, star shaped, circular, square", and can also be customized according to customer requirements.

7. Material advantage: Our egg fryer adopts a stainless steel frame, stainless steel heating tube, aluminum alloy mold, and digital display temperature control meter, which has the characteristics of fast heating, uniform heating, and intelligent temperature control.

Zhucheng Chengda Food Machinery's preserved vegetable omelet frying machine, multi-functional full-automatic egg frying machine, large-scale full-automatic egg frying machine, household egg frying machine, Spicy Hot Pot egg frying machine, breakfast egg frying machine, egg gong fried egg frying machine, preserved vegetable egg machine's egg plate mold models are complete. The depth of the mold and the size of the egg plate can be customized according to customer needs, using food grade 304 stainless steel materials.

Here is an introduction to 304 stainless steel: 304 stainless steel is a common material in stainless steel, with a density of 7.93 g/cm 3; Also known as 18/8 stainless steel in the industry, it means containing over 18% chromium and over 8% nickel; High temperature resistance of 800 ℃, with good processing performance and high toughness, widely used in industrial and furniture decoration industries, as well as food and medical industries. However, it should be noted that food grade 304 stainless steel has stricter content indicators compared to ordinary 304 stainless steel. For example, the international definition of 304 stainless steel is mainly 18% -20% chromium and 8% -10% nickel, while food grade 304 stainless steel contains 18% chromium and 8% nickel, allowing for fluctuations within a certain range and limiting the content of various heavy metals. In other words, 304 stainless steel is not necessarily food grade 304 stainless steel

Common labeling methods in the market include 06Cr19Ni10 and SUS304, where 06Cr19Ni10 generally represents national standard production, 304 generally represents ASTM standard production, and SUS 304 represents Japanese standard production.

304 is a versatile stainless steel widely used in the production of equipment and components that require good comprehensive performance (corrosion resistance and formability). In order to maintain the inherent corrosion resistance of stainless steel, steel must contain more than 18% chromium and more than 8% nickel. 304 stainless steel is a grade of stainless steel produced according to ASTM in the United States

Physical properties: tensile strength σ b (MPa)≥515-1035

Conditional yield strength σ 0.2 (mpa)≥205

Elongation rate δ 5 (%)≥40

Reduction of area ψ (%)≥?

Hardness: ≤ 201HBW; ≤ 92HRB;≤ 210HV

Density (20 ℃, g/cm 3): seven point nine three

Melting point (℃): 1398-1454

Specific heat capacity (0~100 ℃, KJ · kgK): 0.50

Thermal conductivity (W · m · K): (100 ℃) 16.3, (500 ℃) 21.5

Linear expansion coefficient (10 · K): (0-100 ℃) 17.2, (0-500 ℃) 18.4

Resistivity (20 ℃, 10 Ω· m/m): 0.73

Longitudinal elastic modulus (20 ℃, KN/mm): 193

Product standard: For 304 stainless steel, the Ni element in its composition is very important, which directly determines the corrosion resistance and value of 304 stainless steel.

The most important elements in 304 are Ni and Cr, but they are not limited to these two elements. The specific requirements are specified by the product standard. The common judgment in the industry is that as long as the Ni content is greater than 8% and the Cr content is greater than 18%, it can be considered as 304 stainless steel. This is also why this type of stainless steel is called 18/8 stainless steel in the industry. In fact, the relevant product standards have very clear regulations for 304, and these product standards have some differences for different shapes of stainless steel. Below are some common product standards and tests.

To determine whether a material is 304 stainless steel, it must meet the requirements of each element in the product standard. As long as one does not meet the requirements, it cannot be called 304 stainless steel.

Application Scope: System Description: 304 stainless steel is the most widely used type of chromium nickel stainless steel. As a widely used steel, it has good corrosion resistance, heat resistance, low-temperature strength, and mechanical properties; The stamping, bending and other hot working properties are good, and there is no heat treatment hardening phenomenon (use temperature - 196 ℃~800 ℃). Corrosion resistance in the atmosphere. If it is an industrial atmosphere or heavily polluted area, timely cleaning is necessary to avoid corrosion. Suitable for food processing, storage, and transportation. It has good processing performance and weldability. Plate heat exchangers, corrugated pipes, household items (category 1 and 2 tableware, cabinets, indoor pipelines, water heaters, boilers, bathtubs), automotive accessories (windshield wipers, mufflers, molded products), medical appliances, building materials, chemicals, food industry, agriculture, ship components, etc. The 304 stainless steel with strict content control can also be referred to as food grade 304 stainless steel

Most usage requirements are to maintain the original appearance of the building for a long time. When determining the type of stainless steel to be selected, the main considerations are the required aesthetic standards, the corrosiveness of the local atmosphere, and the cleaning system to be adopted. However, other applications are increasingly seeking structural integrity or impermeability. For example, the roofs and side walls of industrial buildings. In these applications, the construction cost of the owner may be more important than aesthetics, even if the surface is not very clean. The use of 304 stainless steel in a dry indoor environment is quite effective. However, in rural and urban areas, frequent cleaning is necessary to maintain its appearance outdoors. In heavily polluted industrial areas and coastal areas, the surface can be very dirty and even produce rust.

But to achieve aesthetic effects in outdoor environments, nickel containing stainless steel needs to be used. Therefore, 304 stainless steel is widely used for curtain walls, side walls, roofs, and other building purposes, but in highly corrosive industrial or marine atmospheres, it is best to use 316 stainless steel. The advantages of using stainless steel in structural applications have been fully recognized for stainless steel sliding doors. Several design criteria include 304 and 316 stainless steel. Because the "dual phase" stainless steel 2205 combines good atmospheric corrosion resistance with high tensile strength and elastic limit strength, it is also included in European standards. In fact, stainless steel is produced in full standard metal shapes and sizes, and there are many special shapes available. The most commonly used products are made from thin plates and strips, and special products are also produced from medium thick plates, such as hot-rolled structural steel and extruded structural steel. And there are also circular, elliptical, square, rectangular, and hexagonal welded pipes or seamless steel pipes and other forms of products, including profiles, bars, wires, and castings.

Product standard: International stainless steel labeling method, the American Iron and Steel Institute uses three digits to label various standard grades of malleable stainless steel. Among them:

① Austenitic stainless steel is labeled with numbers from the 200 and 300 series, for example, some more common austenitic stainless steels are labeled with 201, 304, 316, and 310,

② Ferritic and martensitic stainless steels are represented by 400 series numbers.

③ Ferritic stainless steels are marked with 430 and 446, and martensite stainless steels are marked with 410, 420 and 440C,

Application Scope: System Description: 304 stainless steel is the most widely used type of chromium nickel stainless steel. As a widely used steel, it has good corrosion resistance, heat resistance, low-temperature strength, and mechanical properties; The stamping, bending and other hot working properties are good, and there is no heat treatment hardening phenomenon (use temperature - 196 ℃~800 ℃). Corrosion resistance in the atmosphere. If it is an industrial atmosphere or heavily polluted area, timely cleaning is necessary to avoid corrosion. Suitable for food processing, storage, and transportation. It has good processing performance and weldability. Plate heat exchangers, corrugated pipes, household items (category 1 and 2 tableware, cabinets, indoor pipelines, water heaters, boilers, bathtubs), automotive accessories (windshield wipers, mufflers, molded products), medical appliances, building materials, chemicals, food industry, agriculture, ship components, etc. The 304 stainless steel with strict content control can also be referred to as food grade 304 stainless steel

Most usage requirements are to maintain the original appearance of the building for a long time. When determining the type of stainless steel to be selected, the main considerations are the required aesthetic standards, the corrosiveness of the local atmosphere, and the cleaning system to be adopted. However, other applications are increasingly seeking structural integrity or impermeability. For example, the roofs and side walls of industrial buildings. In these applications, the construction cost of the owner may be more important than aesthetics, even if the surface is not very clean. The use of 304 stainless steel in a dry indoor environment is quite effective. However, in rural and urban areas, frequent cleaning is necessary to maintain its appearance outdoors. In heavily polluted industrial areas and coastal areas, the surface can be very dirty and even produce rust.

But to achieve aesthetic effects in outdoor environments, nickel containing stainless steel needs to be used. Therefore, 304 stainless steel is widely used for curtain walls, side walls, roofs, and other building purposes, but in highly corrosive industrial or marine atmospheres, it is best to use 316 stainless steel. The advantages of using stainless steel in structural applications have been fully recognized for stainless steel sliding doors. Several design criteria include 304 and 316 stainless steel. Because the "dual phase" stainless steel 2205 combines good atmospheric corrosion resistance with high tensile strength and elastic limit strength, it is also included in European standards. In fact, stainless steel is produced in full standard metal shapes and sizes, and there are many special shapes available. The most commonly used products are made from thin plates and strips, and special products are also produced from medium thick plates, such as hot-rolled structural steel and extruded structural steel. And there are also circular, elliptical, square, rectangular, and hexagonal welded pipes or seamless steel pipes and other forms of products, including profiles, bars, wires, and castings.

Product standard: International stainless steel labeling method, the American Iron and Steel Institute uses three digits to label various standard grades of malleable stainless steel. Among them:

① Austenitic stainless steel is labeled with numbers from the 200 and 300 series, for example, some more common austenitic stainless steels are labeled with 201, 304, 316, and 310,

② Ferritic and martensitic stainless steels are represented by 400 series numbers.

③ Ferritic stainless steel is marked with 430 and 446, martensite stainless steel is marked with 410, 420 and 440C, ④ dual phase (austenite ferrite), stainless steel, precipitation hardening stainless steel and high alloy with iron content less than 50% are usually named by patent or trademark.

4) Classification and grading of standards

4-1 Classification: ① National Standard GB ② Industry Standard YB ③ Local Standard ④ Enterprise Standard Q/CB

4-2 Classification: ① Product standards ② Packaging standards ③ Method standards ④ Basic standards

4-3 standard level (divided into three levels): Y level: international advanced level I level: international general level H level: domestic advanced level

4-4 National Standards

GB1220-2007 Stainless Steel Bars (Grade I) GB4241-84 Stainless Steel Welding Disk Park (Grade H)

GB4356-2002 Stainless Steel Welding Disk Park (Grade I) GB1270-80 Stainless Steel Pipe (Grade I)

GB12771-2000 Stainless Steel Welded Pipe (Grade Y) GB3280-2007 Stainless Steel Cold Plate (Grade I)

GB4237-2007 Stainless Steel Hot Plate (Grade I) GB4239-91 Stainless Steel Cold Strip (Grade I)

Processing method:

Etching method

The etching process involves using a screen printed acid resistant protective film on the surface of stainless steel, and then etching it with ferrous chloride solution to form an artistic pattern.

Spray painting method

The spray color method is to spray color particles after screen printing to form an artistic pattern on the surface of a pear peel.

Process:

The process of spray color art processing for stainless steel products is as follows: stainless steel products → screen printing → etching → alkali treatment → screen printing → oxidation coloring → alkali treatment → finished product.

The process of etching art processing for stainless steel products is: stainless steel products → silk printing → etching → alkali treatment → oxidation coloring → finished product.

The chemical coloring method for stainless steel does not use pigments or dyes, but involves soaking the stainless steel in a heated concentrated chromium sulfate solution for chemical coloring. Its characteristic is good food resistance. The ink used in this processing method should have strong acid resistance, and generally use UV vulcanized ink with special properties that are suitable for the processing process.

Stamping processing:

304 stainless steel tool cabinet stainless steel products, especially stainless steel strips, are often processed using a punch machine for stamping products. Stamping includes two methods: direct punching and stretching. Generally, stretching and bending are used when the hardness is lower than 1/2, while direct punching is used when the hardness is higher than 1/2 and slightly hard.

Reason for rusting:

The rust phenomenon of 304 stainless steel material may be caused by the following reasons:

Chloride ion

Chlorine ions are widely present, such as salt/sweat/seawater/sea breeze/soil, and so on. Stainless steel corrodes rapidly in the presence of chloride ions, even surpassing ordinary low-carbon steel. So there are requirements for the use environment of stainless steel, and it is necessary to regularly wipe, remove dust, and maintain cleanliness and dryness. There is an example in the United States: a company uses an oak container to hold a solution containing chloride ions. The container has been in use for nearly a hundred years and was planned to be replaced in the 1990s. Due to the lack of modern oak materials, the container leaked due to corrosion 16 days after being replaced with stainless steel.

Solid solution treatment

The alloy elements did not dissolve into the matrix, resulting in low alloy content and poor corrosion resistance in the matrix structure.

Intergranular corrosion

This material without titanium and niobium tends to exhibit intergranular corrosion. Adding titanium and niobium, combined with stabilization treatment, can reduce intergranular corrosion. A type of high alloy steel that can resist corrosion in air or chemical corrosive media. Stainless steel has a beautiful surface and good corrosion resistance, without the need for surface treatment such as plating, and utilizes the inherent surface properties of stainless steel. It is commonly used in various types of steel and is called stainless steel. High alloy steels such as 13 chromium steel and 18-8 chromium nickel steel represent performance. from

From the perspective of metallography, because the stainless steel contains chromium, a very thin chromium film is formed on the surface. This film is separated from the invading oxygen in the steel to resist corrosion. In order to maintain the inherent corrosion resistance of stainless steel, steel must contain more than 12% chromium. Used in situations where welding is required. The lower carbon content minimizes the precipitation of carbides in the Heat-affected zone near the weld, which may lead to intergranular corrosion (welding erosion) of stainless steel in some environments.

Surface marking phenomenon

The phenomenon of surface marks refers to the occurrence of concave or dotted defects on the surface of 304 stainless steel products after deep processing or grinding. Reason: There are foreign objects on the surface and mold surface, and there are scars on the surface of the edge pressing pad.

Countermeasure: Remove foreign objects and scars before processing, and also remove orange peel through sufficient grinding.

Orange peel phenomenon refers to the phenomenon of 304 stainless steel products forming a surface resembling an orange peel during grinding or other conditions.

Reason: Insufficient grinding, the larger the processing, the more severe the orange peel, the coarser the grain size of the raw material, and the softening during heat treatment.

Countermeasure: Fully grind deeply processed products, select suitable heat treatment conditions, and control the grain size of raw materials.

After years of technical research and development and repeated practical inspections, Zhucheng Chengda Machinery not only specializes in producing fried egg machines, but also produces various food machinery and equipment, such as quantitative filling and filling machines, fully automatic duck cake machines, dual chamber vacuum packaging machines, fish and tofu cutting machines, egg dumpling processing machines, and a series of products. Our egg dumpling processing machine can be set according to the required temperature. When the egg dumpling machine reaches the set temperature, it will automatically stop heating, and when it is below the set temperature, it will automatically heat up to maintain a constant and stable working temperature on the working surface. The temperature controller adopts advanced digital display temperature controllers, eliminating the traditional mechanical temperature control system, ensuring stable quality and accurate temperature control.

Zhucheng Chengda Food Machinery Co., Ltd. is located in Zhucheng, Shandong, the hometown of dinosaur fossils and a food machinery processing base. Zhucheng Chengda Machinery Technology Co., Ltd. is a large-scale enterprise specializing in the development, manufacturing, and sales of various types of food machinery. The company innovates and strives with a firm belief, forging into steel in the fierce market competition; With the concept of creating value through quality, we have achieved high-quality products in the food machinery industry.

All employees of the company warmly welcome your arrival!