Exhaust Manifolds Delayed delivery Problem in China

Our Dandong Iron Casting Group has produced cast iron, ductile iron ,vermicular cast iron  and aluminum over 12 years,we  produce and develop more than 70 different kinds of intake manifolds and exhaust manifolds,many customers are confused for the exhaust manifolds delivery Delay problems,because we have rich experience of production Manifolds,I hope to share  with investors who plan to purchase exhaust manifolds in China,help them to know these details before begin the manifolds order plan in China.

Long Time for scan the manifolds drawing

Many  investors only have exhaust manifolds samples,they  even don't take the drawings according these manifolds sample,because it requires professional experience.However,we can solve the problem for customers,

They only need to send these manifolds sample for us to reference,we have scanners and professional drafting engineers,due to the complicated shape of the exhaust manifolds,it usually takes 7-10 days to complete

The 2D and 3 D drawing scan.

After we finish these manifolds drawing,we will send these drawing to confirm with our investors,after get these approve,we will begin the tooling production.

Long Time for Patterns and Samples

If our investors has the 3D drawing for manifolds,our patterns engineer  can directly conversion to mold drawings. Due to one type of manifold may need 3 to 5 sets of metal patterns,the manifolds metal patterns will need much longer time than other projects patterns.Other casting projects may only need one set metals patterns,about 20- 30 days.However,for Manifolds metals patterns about need 35- 40 days for 3 to 5 sets molds,of course,if our manifolds shape is simple,may only need 25-30 days.

When pattern completed,our metal foundry will start to make sand shells and cores, one molding machine can only use one set of pattern, so making sand molds will use longer time than others. If other molding machines are busy for other products, it is difficult to arrange several molding machines to work at the same time for manifold.

When our manifolds sample come out,we need to inspection the blank casting dimensions and to confirm whether has the shrinkage, trachoma and other casting defects.If has these problem,we need to modify the metal pattern again,it process will be repeated until the problem has been solved.

When we finish the blank  casting sample,we need to verify the accuracy of the fixture,because most situation,our engineer design and take the fixture according our drawing,when we have the real sample,we only need to verify and modify fast,it will save  lots of time. Of course,if our manifolds shape is complex,our technical staff will need to see the real samples, then design the fixture.

All these factors will cause very long leading time for patterns and samples.If this factory has rich technical experience for production Manifolds,they may save some time for gating design and defects, but still need longer time than other castings.

Long Time for Initial Orders and Batch Production

 
During initial orders,some casting defects and quality problem may will Come out,we will modify the pattern and adjust the casting process in time. After we solve all quality problem,we will direct begin to production New order according our order quantity.

Most of cast iron and  vermicular cast iron exhaust manifolds will have big inside cavity, which will be made by big sand cores. The sand cores will cause air venting problem. The air in the sand cores will come out and go into the hot irons, so will cause big casting defects. Iron foundry has to solve this problem by some methods, it will need some time.

Moreover,Due to one manifolds will occupy 2 to 3 molding machines,it also will affect the delivery time,our factory have 16 set molding machines， most situation,we  have the ability to handle and adjust the production schedule.If our orders are urgent,we also can production these sand cores from our cooperation factories,so that can ensuring delivery time.

How to Solve the Production Delay Problem

It is very difficult to avoid all problems when production exhaust Manifolds,according my experience, I would like to share some suggestions with investors,as follow:

Firstly, the investors should give the manufacturers enough time to develop and production the metals patterns and manifold sample,If they  force producers to shorten  much time，the finial manifolds quality may has some big problem，they will take lots of time repairing.

Secondly, the  investors should give enough time for initial orders. The initial orders will take longer time than the normal orders. When we finish the initial orders once time,it will be fast to production next batches.

Thirdly, if investors has good sales for manifolds,I suggest consider to build some stock in your supplier's foundry, or in your own warehouse.

Otherwise, there may be some factors that will affect your sales.

At last,only a few factories can produce exhaust manifolds with high quality in China,It requires sufficient technical strength and experience to solve some problem when actual production.However fortunately,we are good  producers for manifolds.