It is not the firs time in Zatec where we found this phenomenom known like Creep, a problem to bear in mind depending on some final applications. Like injection molding company of technical parts in engineering plastics located in Zaragoza(Spain), we help to our customers to chose the adequate raw material based on final requierements. As you can read as follows, we are going to explain you this problem of Creep.
Sometimes, our plastic parts are subjected to constant strain during long time, and therefore, the deformation can increse up to break, even below the resistance of material. Normally, we represent in a graph with deformation or strain based on time, according to tensile tests. A datum to bear in mind is the Young Modulus, very usefull for designers due to we can include this mentioned datum in ecuations of resistance materials or simulations about finite element method by computer to predict the behaviour during lifetime.
The raw material, composition and, obviously, the process of injection molding can influence in their properties, like creep. For example, some materials with glass fiber have a better behaviour for this phenomenom than other unreinforced materials, due to hardness. In fact, the most materials used in Zatec have a lot of content of glass fiber, but this tipe of reinforcement could generate a fragile fracture. By this reason, we must consider some extra additives like impact modifiers or conditioning the humidity in some higroscopyc poliamides, avoiding or minimizing the mentioned fracture, being ductile fracture instead of fragile fracture.
The failure in plastic part could be by excessive deformation and due to formation of cracks. Therefore we will have a non-functional piece. The cracks can appear like an asnwer by applied stress, internal or external overcoming the intermolecular links like hydrogen or Van der Waals forces.
Some typical example is the break around of groves, where the final customer apply a force in screw due to tightening torque in the final assembly. Anyway the break could generates some time after.
Therefore, we can say like final conclusion, the creep is a combination of several factors that we must analyze before in the design phase to avoid the break by Creep.
Unfortunately, today is very difficult to talk without saying the word of COVID-19. Despiste of this, laying aside the santitary situation, where we do not pretend deepen now(although we understand this is the most important), but obviously we must to take a conscience of near future based on this eventually moment, due to automotive market has changed dramatically in few time, affecting to all supply chain, since OEM to final Tier-n company.
This year 2020 it already was complicated and strange. Zatec like injection molding company of technical parts in engineering plastics for automotive(mainly), we are seeing each day too many bad news about the stop in the manufacture industry in Spain, there is much uncertainty about the come back to the work in OEMs companies without a clear date. Anyway in ZATEC we will try to be optimistic, because we are looking to return with relative normality and with more force than before based on adequate safety measures, analyzing the current situation:
The pause in the production of several OEMs at national level(we can say global, in multinational companies), affecting to Tier1 companies, where the common is to cancel or postponed the ongoing orders, and therefore this situation generates more uncertainty increasing the “snow ball” kwnown like crisis, rolling down to the next companie in the supply chain. Logically, to avoid the quick spread of virus.
Almost all Tier1 companies have stopped their manufacturing process, many of them wihout previous advise, therefore there are several parts in transit wihout possibility to download up to new message or several orders in injection machines, but these parts cannot be sent. This is more stock, which we do not know what will be the date of delivery.
Talking about stocks, car dealers will decrease their sales. The reason is simple, the people will spend less money or spend the money in other things based on Maslow’s pyramide. Besides there is the battle betwwen electrical car versus Diesel cars, but this is not the adequate moment to open other debate.
All of this mix implies as follows, if the company does not invoice or the payment terms with their customers are very stifling, the companies will be problems with cash flow. Therefore this is an important value to take in count at this moment, and it would be necessary an action from government to promote this sector or others. As you know, everything is connected. By this reason, this mentioned action from government must be available first for Little and Medium companies, preserving the business fabric. The last crisis began wiht a financial collapse but now we think there is still margin to act.
Anyway, we already working thinking to return with a relative normal activity based on preventive safety plan. This is an oportunity to improve in all departments, adapting our work according to new situation.
We want to communicate you, the technical and sales areas continue at your disposal with a know-how of more than 25 years of expertise in injection molding, collaborating with customers since deign phase to serial plastic part.
En ZATEC estamos de enhorabuena y es que cumplimos nada más y nada menos que 25 años.
Mucho ha llovido desde nuestros inicios allá por 1991 en un polígono cuyo nombre si quiero acordarme, el conocido Polígono Malpica de Zaragoza. Desde allí, con mucho trabajo y la visión de su fundador Ramón Benedí: ser un proveedor preferencial de piezas de calidad en plásticos de ingeniería para nuestros clientes, hemos ido creciendo año tras año hasta llegar a las 17 máquinas en las actuales instalaciones de Muel a 27 km de Zaragoza, trabajando para diversos sectores como electricidad, electrónica, iluminación, electrodomésticos y automoción entre otros.
Creciendo de la mano de importantes clientes, a los que agradecemos su confianza desde hace muchos años y con la calidad muy interiorizada, hemos ido adaptándonos a las exigencias de cada uno de ellos, tanto en equipos como en recursos humanos, certificándonos con la exigente norma ISO/TS-16949 para proveedores del sector automoción.
A pesar del trabajo realizado, no hubiera sido posible llegar hasta aquí sin unos buenos proveedores como los que tenemos y que tanto nos han apoyado. Además y como no, mencionar a todas y cada una de las personas que forman o han formado parte de Zatec, por su esfuerzo, dedicación y compromiso sobre todo en los malos momentos. Muchas de esas personas llevan toda una vida en la empresa y han contribuido directamente a que es hoy en día ZATEC.
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