The Research Of Procurement Decision-making Of Steel Enterprises About Iron Ore Under The Dual Market

Iron and steel industry is the important support strength of China’s economicdevelopment, is a strategic pillar industry of our country, its development conditionaffects our country’s international economic status. But because of the internationaliron ore prices continue to rise in recent years, compressed the profits of the domesticsteel industry, thus restricting the healthy sustainable development of iron and steelenterprises.In the face of the uncertainty of the international iron ore market price,more and more domestic steel enterprises to consider about through domestic marketfor iron ore’s supplement when they making iron ore procurement decision, thusforming a new iron ore procurement decision problem under the dual market, so theanalysis to solve this problem, has important theoretical significance and practicalvalue.This article systematic combed related literature about the iron ore procurementand inventory at home and abroad, based on the history of the development ofdomestic and foreign iron ore prices change data,analysis about the current purchasingand inventory management status of domestic steel enterprises, and through the linearparameter model and ARIMA model to forecast the iron ore prices, accurateprediction of conclusions.On this basis, constructed the enterprise cost model of twodifferent circumstances, and discussed of purchasing decisions and inventory controlstrategy in the two kinds of iron and steel enterprises under the dual marketenvironment, to get the purchase decision under iron ore price changes of thedifferent conditions:(1)When the international iron ore market price rate is less thanthe domestic market price change rate, and were greater than zero,the purchasequantity isQi；(2)When the international iron ore market price rate is greater than thedomestic market price change rate, and were greater than zero,the purchase quantityisF(mi)；(3)When the absolute value of the international iron ore market price changerate is less than the absolute value of the domestic market price change rate,thepurchase quantity isF(mi)；(4)When the absolute value of the international iron oremarket price change rate is greater than the absolute value of the domestic marketprice change rate,the purchase quantity isF(mi)like the second。...