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Learn about Jun long precision casting Co,.Ltd
2018 / 07 / 09
Wei fang Jun long precision casting co., LTD., the main products are precision casting of carbon steel, low carbon steel, medium carbon steel, high carbon steel,Aad alloy steel precision casting, high manganese steel, high chromium steel, high nickel steel, a variety of materials such as precision casting products .The parts most is precision casting of auto parts, forklift parts investment casting, precision casting of ship parts,precision casting of train parts, mechanical parts investment casting, petroleum machinery, mining machinery .Our products have been exported to more than 20 countries and regions in the world. Our company has cooperated with our customers with the business philosophy of integrity, pragmatism, professionalism and innovation, and won the unanimous praise of our customers The company covers an area of 30,000 square meters, with more than 200 employees, 10 r&d personnel and 12 quality control personnel. There are three production lines, two composite process (i.e. silica sol + water glass), and one silica sol process. The annual output reaches 8000 tons, the enterprise has passed iso9001:2005 quality management system certification, and passed the national environmental protection department approval, has the formal environmental assessment certificate, is a household name of the green casting enterprise
What is composite technology investment casting?
2017 / 07 / 31
Are main products of our company adopted complex process (silica sol + water glass), adopt the low temperature wax, four shell layer using silica sol process, three layer after using water glass process, composite process to produce a product that no matter from the surface finish, and internal quality and silicon sol process almost the same, the price is cheaper than silicon sol process a lot, and water glass price though it's cheap, but the product is very rough, and composite technology products of good quality and low prices, the most suitable for large batch of products, can guarantee the quality of customer requirements, and can guarantee a reasonable profit space, so, Our foreign customers have been cooperating with us for 8 years, and we have cooperated very well. Composite precision casting is suitable for many industries,In our company,Such as precision casting of auto parts.precision casting of truck parts .forklift parts investment casting,precision casting of mechanical parts as so on,
Investment casting can cast more than 100 kg of products?
2017 / 06 / 22
150 kg carbon steel precision casting can be precision casting, but the cost is high.If the demander does not take the cost into account, precision casting can be adopted. Most small castings in the market adopt precision casting technology. For example, mechanical parts castings and pump valve castings are more than 100kg in weight. Our factory can finish casting with investment casting yet. Sand holes and air holes are often found in precision casting of carbon steel with relatively large size. The solutions are as follows:
The process and management features of Weifang Junlong
2018 / 04 / 22
1. In wax pattern process,we mix stearic acid and paraffin wax in wax pattern making,as you know,it is better than polyethylene,and the wax deformation is small. 2. In dipping slurry process,most of the suppliers adopt water glass technics in domestic area,but we adopt compound technics or silica sol technics.As you know,carbon steel castings will be much smoother with compound technics (compound of water glass and silica sol technics),this method is so popular with our customers, and the quality is higher than water glass technics, the cost is lower than silica sol technics. 3. In shell making,we adopt automatic sand-covering production line, which was invented under the guidance of our general manager.The indoor temperature was controlled by air-conditions,keeping the temperature at 24℃±1℃, which can make the castings much more stable,the internal tissues much more well-proportioned. 4. In shell hardening process,we use aluminium chloride to harden the shell.This can make the shell so hard that it can`t be distorted,at the same time the bug which the casting may have will b
Specialized custom precision casting factory
2023 / 02 / 08
Precision casting is also called lost wax casting. Its products are precise, complex and close to the final shape of the parts. They can be used directly without processing or little processing, so investment casting is an advanced technology of near-net shape formation. Ancient China: Wang Ziwu tripod, copper ban, copper lion, etc., are masterpieces of investment casting. Since investment casting was used in industrial production in the 1940s, it has been developing rapidly in half a century. In particular, European and American countries are developing rapidly. Investment casting is used in aviation, weapons sector, almost used in all industrial sectors, especially electronics, petroleum, chemical, energy, transportation, light industry, textile, pharmaceutical, medical instruments, pumps and valves and other sectors.
The history of precision casting/ investment casting
2019 / 10 / 16
Investment casting is an industrial process based on lost wax casting , one of the oldest known metal-forming techniques.The term "lost-wax casting" can also refer to modern investment casting processes. Investment casting has been used in various forms for the last 5,000 years. In its earliest forms, beeswax was used to form patterns necessary for the casting process. Today, more advanced waxes, refractory materials and specialist alloys are typically used for making patterns. Investment casting is valued for its ability to produce components with accuracy, repeatability, versatility and integrity in a variety of metals and high-performance alloys. The fragile wax patterns must withstand forces encountered during the mold making. Much of the wax used in investment casting can be reclaimed and reused. lost wax casting is a modern form of investment casting that eliminates certain steps in the process. Investment casting derives its name from the pattern being
2019 / 10 / 03
The term ìcastings and forgingsî refers in general to those metal items made in foundries and forges, respectively. Examples of castings and forgings include: automotive crankshafts, bearing caps, axle carriers, axle tubes, valve bodies, turbine housings, splines, suspension brackets, spring hangers, flanges, gear blanks and more. Foundries and forges are both facilities in which whole metal parts are made, though they do so using very different techniques. As implied, foundries are used to make castings, while forges are used to make forgings. However, because the casting and forging products can be so similar, people often incorrectly refer to forges as foundries. Read on to understand the difference in their respective processes. To make castings, which have mid to high tolerances, manufacturers use closed molds, high pressure, high heat and molten metal. During casting, manufacturers heat metals until they are molten and then pour them into dies or molds, where they take on that vesselís shape. Techniques manufacturers in forges use include hot and cold hammering and stamping of solid metal pieces. In other words, castings are made through the manipulation of molten metal, while forgings are made through the application of mechanical and thermal energy on solid metal.
Weifang junlong focus on cable protector for Oil parts
2019 / 03 / 13
Punching Cable protectors are formed by bolt mounted in the connection pipe, for a variety of cables, control lines, chemical injection line, encapsulation line and etc, widely applied on cross coupling, tubing, safety valve protection, completions, fixing, well repair and gauge completions. It provides a safe and quick way of conveying and securing downhole cables into well-bore. The materials are stainless steel, carbon steel and other materials for the client`s unique needs. It is convenient and multi-coupling using compared to the other products; hence they are preferred by more clients. A hand caliper or hydraulic caliper is needed for field installation
Knowledge - the characteristics of four shell making processes for precision casting
2018 / 10 / 04
Water glass shell This process has a history of nearly 50 years in China. After half a century of unremitting efforts of colleagues in the precision casting industry, the application and research of the water-glass shell process has reached a high level.Over the years, the strength of the water glass shell has doubled due to the improvement of the back layer shell refractory and the application of the new type of hardener.Low cost, shortest production cycle, excellent peeling performance and high permeability are still the advantages of any other shell technology.
Precision casting industry characteristics
2018 / 09 / 04
Precision casting which is commonly used is the investment casting, also known as the lost wax casting: selection of suitable casting mould materials of (such as molten mould made of Paraffin); in the casting was repeated dip refractory coating and cast refractory sand process, hardening type shell and dry; the internal revestment melt away and get cavity; shell firing to obtain sufficient strength and burn the residual casting mould materials,; pouring need metal materials; solidification shell after sand cleaning to obtain high accuracy of the finished product. Heat treatment and surface treatment according to the needs of the product or heat treatment. For example, sand casting, a large number of production factories should create conditions using advanced technology design, core making method. Old shock or jolt squeeze moulding machine production line productivity is not high enough, high labor intensity of workers, large noise, does not meet the requirement of mass production should be gradually change. For small castings, can adopt horizontal type or vertical type box without high pressure molding machine production line, mould production efficiency and high, covers an area of less; for parts can be made of various box high pressure molding machine production line, air impact molding line, in order to meet the requirements of rapid and high precision molding line, core making method can choose: cold core box, hot core box, shell core of high core method. Medium lot of large castings can be considered in the application of self hardening resin sand molding and core making. Single piece and small batch production of heavy castings, manual modeling is an important method, manual modeling can adapt to a variety of complex requirements are flexible, does not require a lot of technology and equipment.
Precision casting equipment for the development of business productivity
2018 / 09 / 02
For the application of precision casting equipment, from a practical point of view the development of foundry capacity, highlighting the advantages of enhancing overall equipment effectiveness, continuous improvement in the overall performance of its value to promote and accelerate application performance and the strength of the effect, which fully reflects the product the level of performance advantages, the use of its own advantages to enhance product performance to accelerate the effect of speeding up the overall performance of play equipment to achieve the level of use and quality driven products, expanding its use of the overall strength of the overall development. Precision casting equipment to develop strength, reliable performance reflects the development of productive forces, in the continuous improvement of its products, driven by the effect of the performance advantages of the process, which fully reflects the application to enhance its inherent strength, the strength of all aspects of the use of the promotion process, achieve the overall strength of the propulsion equipment, from product performance to the actual level of overall play, speed of rising quality of their products, which fully reflects the effect of product applications and quality advantages of capabilities. Through the application of precision casting equipment, products and practical ability to speed up the overall level of driving, in order to be more reliable level of performance reflected in the quality of products, but also with all aspects of the strength of the advance, driven by continuous improvement of its performance advantages, the use of whole advantage of reflecting, thereby improving the
The new situation of weifang junlong precision casting Co.,Ltd
2018 / 08 / 25
In recent days,Wei fang Jun long Precision Casting Co., Ltd. has vigorously promoted the theme of "Fine, Fine, and Strict," "Fast, Quasi, and Practical" style and promotes the rapid and sustainable development of the casting industry. To carry out, so that the majority of employees to further emancipate the mind, understand the situation, clear goals, implement responsibilities. It is reported that in order to create a good atmosphere of propaganda, Wei fang Junlong Precision Casting Co., Ltd. has formulated an education propaganda plan for the 2015 situation. The team members have in-depth contact points for the preaching of the situation. The party committee has made full use of radio, television and other channels to increase propaganda. The party branches shall make full use of workshop production meetings, team leader meetings, and class meetings to make full use of workshop production meetings, team leader meetings, and class meetings to timely publicize the company`s current business situation and encourage employees to work hard and add momentum. The labor union actively organizes employee communication meetings and communicates with employees through leadership. Communication helps employees solve practical problems and encourage staff morale.
traditional handicraft of precision casting
2018 / 08 / 24
Castings can be made from an original wax model (the direct method) or from wax replicas of an original pattern that need not be made from wax (the indirect method). The following steps describe the indirect process, which can take two to seven days to complete. Produce a master pattern: An artist or mould-maker creates an original pattern from wax, clay, wood, plastic, or another material.[5] In recent years the production of patterns using 3D printing has become popular using either standard PLA filament or custom made 'casting wax' filament, in which case one goes directly to step 5. Create a mould: A mould, known as the master die
Introduction of precision casting process
2018 / 08 / 08
[China steel casting] In considering the following three issues, the main basis is still the basic principles of the general casting process, especially in the determination of process plans, process parameters (such as casting fillet, mold draft, machining allowance , process ribs, etc.) In addition to the specific data due to the slightly different process characteristics of investment casting, the design principles are exactly the same as for sand casting. As with the general casting process design, the investment casting process design task is: (1) Design the rigging system and determine the module structure. (2) Analyze the processability of the casting structure; (3) Select a reasonable process plan, determine the relevant casting process parameters, and draw a casting diagram on the basis of the above. Investment Casting Features: Another advantage of the investment casting method is that it can cast complex alloys of various alloys, and in particular can cast high-temperature alloy castings. For example, the blade of a jet engine, its streamlined profile and cooling cavity, can hardly be formed by a machining process. The investment casting process can not only achieve mass production, ensure the consistency of the castings, but also avoid the stress concentration of residual knife marks after machining. Investment castings have high dimensional accuracy, generally up to CT4-6 (sand casting is CT10~13, die casting is CT5~7). Of course, due to the complicated process of investment casting, there are many factors that affect the dimensional accuracy of castings, such as molds. The shrinkage of the material, the deformation of the investment mold, the change in the amount of wire in the heating and cooling process of the mold shell, the shrinkage rate of t
China's environmental situation is serious, how should foundry survive?
2018 / 07 / 19
From 2017 to 2018, it will be a difficult year for the casting industry in China. It will be difficult to hire workers, the factory will stop production and make rectification, the price of casting raw materials will rise sharply, and the casting market will be in short supply During production, the foundry will discharge harmful gases and pollute the air, such as sulfur dioxide, carbon monoxide and a lot of dust. After finding the problem, the state environmental protection bureau began to clean up the foundry from last year .The foundry was forced to stop production several times without any economic compensation or tax relief. At present, the environmental rectification of the foundry continues to progress. some foundry factories in Hebei , Shandong, Henan, Shanxi and other places have begun to rectify and close down due to the poor environmental protection standards .This month, the central environmental protection inspection team will supervise more than 15 provinces and cities in Hunan, Anhui, Xinjiang, Tibet, Guizhou, Sichuan, Shanxi, Shandong, Tianjin, Hainan, Liaoning, Jilin, Zhejiang, Qinghai and Fujian in two batches.
Defects and solutions of silicon sol-lost wax casting process
2018 / 06 / 14
Defect 1: casting shrinkage cavity The main reason is that the alloy solidifies and contracts, which causes the casting shrinkage cavity and absorbs a large amount of oxygen and nitrogen in the air when the alloy is dissolved. Solution: 1) place the gold ball. 2) the diameter of the thickened casting channel or the length of the shorter casting channel. 3) increase the amount of metal used. 4) the following methods are adopted to preven
Development prospect of investment casting
2018 / 02 / 15
Precision casting is refers to the use of fusible materials meltability model, on which the coated with several layers of tailor-made refractory coating, after drying and hardening type to form a whole shell, reoccupy steam or hot water from the melt in the shell model, and then put type shells in the sand, dry sand by filling in all round its modelling, finally will be cast into the furnace after high temperature roasting, cast type or shell after roasting, and are casting in pouring molten metal. Revestment precision casting products for precision, complex, close to the final shape, can not machining or rarely used directly, is a kind of advanced net-shape forming technology, is an excellent technique in foundry industry, its application is very extensive.It is not only applicable to the various types, various kinds of alloy casting, and produce the casting dimension accuracy and surface quality higher than other casting methods, or even other casting method is difficult to cast the complex, high temperature resistant, not easy machining castings, all can use revestment precision casting wrought. The current world revestment precision casting forming technology has developed rapidly and widely applied, from the current situation, the future is the development trend of this technology in the future of the casting products is more and more close to the components, the traditional casting
What is a qualified precision casting
2018 / 01 / 10
What is a qualified precision casting Qualified standard for precision casting: the surface of the casting does not have the clay sand oxide leather, flying edge and casting tumor, etc.If there are surface defects on the machining surface, the depth should not be greater than 2mm.If it is on a non-machined surface, the depth should not exceed 1mm.In addition, no linear defects or cracks can be found in all parts.In order to meet the above conditions, precision casting can be qualified. Weifang junlong factory with the advanced precision casting technology, the company produces precision casting of carbon steel, alloy steel and other materials.The application of products is very extensive, covering almost the whole machinery manufacturing and machinery processing industry can, application fields, mainly mining, engineering machinery, petroleum, shipping, automob
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Ms. Anna
Tel:86-0536-7669966
Fax:86-0536-7669966
Mobile Phone:+8618363688899
Email:info@Junlongcast.com
Address:No 2084,eight road.Fangzi district , Weifang, Shandong
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.