There are many ways of casting and the most common methods include sand casting,lost wax casting and die casting.
I.The difference of sand casting,lost wax casting and die casting.
Sand casting is the use of various sand molds for casting,commonly include gypsum sand mold, water glass sand mold, resin sand mold, etc,By injecting melt casting metal into the sand mold,Then wait for the casting parts to cool and solidify, and get it from the sand mold.
The surface of sand cast finished products is relatively rough, but the cost is lower, making it suitable for producing parts with complex shapes and small batches.
Lost wax casting(Our technique):Lost wax casting is a technique of pouring molten metal into a mold and cooling it to get parts with a certain shape and accuracy.It Can produce parts with complex shapes, high precision, and high surface quality,meanwhile multiple materials can also be used for casting.However, this technology requires consumable material and complex manufacturing processes, resulting in longer costs and development time.
Die casting is a technology that uses a die casting machine to press liquid alloys such as aluminum and copper into a mold for cooling and solidification, forming various shapes. It is efficient and can make mass production,Mold manufacturing and operation are simple, with relatively low costs.But the biggest drawback of die casting is that it is only suitable for parts with similar shapes, and its manufacturing process easy to have pores and defects.
II.The difference between lost wax casting water glass technique and silicon sol technique

1. The surface quality of the mold shell is different,The mold surface produced by silica sol casting has good smoothness, higher dimensional accuracy, and does not require secondary processing. The surface quality of the water glass process mold is ordinary, the dimensional accuracy is not high, and the casting parts yield is low.
2. Dry hardening is different. Water glass requires hardening agents such as ammonium chloride, while silica sol shell molds can dry and harden in a constant temperature and humidity space.
3. The applied products are different. The silica sol process is mainly used for small products, mainly for high alloy steel and stainless steel products. The products made by water glass technology are relatively larger and mainly used for carbon steel and low alloy cast steel parts.
4. Costs vary. The cost of silica sol process is high and the production circle is long. Water glass is relatively inexpensive and has a short production circle.

  These two techniques both belongs to lost wax precision casting.The difference lies in the different adhesives used in the shell making process,so that the surface quality of the mold shell produced is different.The wax of water glass is softer, while the wax of silica sol is harder.

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Ningbo Beilun Haiteng Machinery Manufacturing Co., Ltd. was established in 2000,which located in Ningbo City. We are engaged in casting and machining services for 25 years. Our main products include automotive parts, ship parts, specialized and general machinery parts, elevator parts, hardware parts, agricultural machinery parts, water supply&drainage parts etc. The main markets contains the United States, Germany, Australia, and other countries.Our product's quality are highly praised by domestic and foreign customers.Our company covers an area of over 8000 square meters and the production plant more than 5000 square meters.Annual production of precision casting parts are about 2200 tons.We can start from the drawings or sample which provided by our customer until the end products are provided.Our company can produce castings of materials such as carbon steel, alloy steel, gray iron, ductile iron, etc, We can provide a one-stop service from mold opening to casting,products processing, surface treatment, and finally packaging and shipping.We adheres to the production and operation philosophy of controlling every process and doing a good job in each product.

Q1. Are you a factory or trade company?
♦We have own factory and 80% of staff in our company worked for more than 10 years.
♦We provide a competitive price.
Q2. What kind of production service do you provide?
We provide one-stop service for all custom needs, including raw material, design, fabrication finish treatment, assembling,packing and shipping.
Q3. How about the lead time?
♦Mold: 3-5 weeks
♦Mass production: 3-4 weeks
Q4. How about your quality?
♦We have got ISO9001:2015 and IATF16949 certificates.
♦We will make the operation instruction once the sample is approved.
♦We will 100% inspect the products before shipment.
Q5. How long should we take for a quotation?
After receiving detailed information(your 2D/3D drawings or samples), we will quote you within 2 days.
Q6. What is your quotation element?
Drawings or Sample, Material, Finish, and Quantity.
Q7. What is your payment term?
♦Mold: 50% prepaid, balance after sample approval.
♦Goods: 50% prepaid, balance T/T before shipment.