Ningbo Yinzhou Guang-ao Machinery Factory

Modeling methods selection
According to casting and production quantity, structure size complexity degree, technical requirements and factors,Can be chosen the following different and modeling and methods. Such as:
1. Handmade Modeling or machinery modeling;
2. Wet or dry type;
3. Actual mold modeling or scraper modeling;
4. Sandbox Modeling or the ground modeling;
5. Sand or metal type etc.
 

Casting production process planning decision should be based on product parts drawing the shape, size and technical requirements, selected a good variety of casting process parameters,
To ensure that the casting shape and size to meet the requirements. Casting process parameters by the metal type and casting methods, the characteristics of the decision. The course content includes casting shrinkage, mechanical allowance, Draft Paper oblique, casting the first round and the core size, etc.
A few cases to consider processes to make corrections and negative, such as typing.
So far, the majority of casting process parameters are at the basis of clay on sand casting summed up, with the modeling material development, improve the degree of mechanization,
With the process parameters will also change. Casting process parameters so selection must be based on actual production, flexible use of various forms and data.

Casting Process
Formulated in order to make the casting process to facilitate the implementation of, compliance with and communicate with language, forms and drawings indicate the order of casting process, requirements, methods, process norms,
As well as the materials and specifications of the technical documents, known as the casting process a point of order.
?Casting process at a point of order are summed up and improve on the foundation prepared, it is access to good quality, high yield casting a technical management measures, in production can play the role of the following:
(1) pre-design, the process can select a reasonable program to prevent casting defects, while the use of advanced technology, there is conducive to low-cost access to high-quality castings.
(2) there is in favor of the technical preparatory work, such as sand boxes, core and mold preparation of bone and so on. This is an important condition for production.
(3) Process in accordance with technical requirements at the various processes in the aspect of technical inspection. Of the casting defect found easier to identify the causes, which can prevent the defects.
(4) can continue to accumulate and sum up experience, improve the level of process technology.
Casting process of the preparation and implementation of a point of order, are the implementation of program management, set up the scientific basis for economic accounting, but also the core of technical preparations. For this reason, the casting process has been to develop a point of order Should be strictly enforced and compliance. If so, modify the views, we should also have the first department to obtain the consent of the changes on its own can not be arbitrary.

Casting of advantages
1) fit scope Canton. Casting almost no matter Casting big small, thick thin and shape complexity degree of the restrictions, Casting the wall up to 0.3 ~ 1000mm, the length of from several mm to ten meters, Quality from several g to 300 t over. Most fit production shape complexity, in particular, is lumen complexity of parts, such as complex the Box, Valve, Impeller, engine cylinder body, the propeller etc. 2) Casting methods can take use the Materials Canton. Almost everybody can melting into liquid of Alloys Materials are can use at casting. Such as cast steel, cast iron non-various aluminum alloy, copper alloy, added alloy, ferro-alloys and pot alloy etc castings. For plastic less the brittle alloys materials (such as cast iron etc), Casting is only feasible the Forming technology, at Industrial Production Medium to cast iron pieces Applications most widely about accounting Casting output of 70% above. 3) The casting has a dimensional accuracy. Under normal circumstances, than ordinary forging, welding forming precise size. 4) low-cost and good overall economic performance, energy, material consumption and cost for other methods of metal forming yet. Casting machine in the general quality of the total 40% ~ 80%, while the manufacturing cost of the total cost of the machine is only 25% ~ 30% 0 low cost because:
? Flexible production methods, production can be mechanized production organizations.
? Can be substantial use of waste, the old metal materials and renewable resources.
? Compared with the forging of its small power consumption.
? There is a certain degree of dimensional accuracy So that small allowance, saving processing time and metal materials. Foundry machinery manufacturing industry are rough and parts of the main suppliers in the national economy and takes up an extremely important Status. Castings in the machinery of production, the proportion of goods, and key parts such as internal combustion engine (89 kinds) are cast, representing 70% of the total mass of ~ 90%, Casting quality cars accounted for 19% (cars) ~ 23% (trucks); Machine tools, tractors, hydraulic pumps, valves and general engineering casting quality in 65% ~ 80%; Agricultural machinery in the casting. Quality accounted for 40% ~ 70% of mining and metallurgy (steel, iron, non-iron alloy), energy (fire, water, nuclear power, etc. ), Marine and aerospace industries such as heavy, large equipment castings are difficult to account for a large proportion of and play an important role.
 

What is a Casting?
Casting production usually is that by using melting and alloy materials production products and methods.Will be liquid alloy implantation pre-prepared well and mold so thatthe cooling.Solidification,and acquisition rough or parts.This manufacturing process referred to as casting and production.Referred to casting the casting out products known as casting. for short Casting , the cast out of Products called Casting.  The cast out of Products called Casting. Large majority castings as rough. Required after machining after be become various machinery parts; Some Casting When Tatsu to use the size accuracy and the surface roughness request h. Can be made finished or Parts direct applications.